Simulation Workflow from Ansys Electronic Desktop Circuit to Ansys HFSS

ANSYS Electronics Desktop (AEDT) is a collection of powerful tools for simulation. AEDT Circuit provides time domain as well as frequency domain analyses. AEDT Circuit has high execution speed and robust ability to handle circuits of active and passive elements. Analysis types range from DC, Linear Networks (frequency domain), Transient, Oscillator, TV Noise, Envelope, Harmonic Balance, VerifEye (Statistical Eye Diagram), AMI Analysis, and more, with integrated support for additional co-simulation with tools like HSPICE or Matlab.

AEDT Circuit also provides an easy way to create and simulate planar structures such as microstrip, stripline, coupled lines, co-planar strips, co-planar waveguides, and other Printed Circuit Board (PCB) elements which can then be converted into a physical layout of the PCB. In this blog a simple workflow is explained to generate and model a planar structure in Circuit, then export the circuit model to HFSS 3D layout and HFSS for further analysis.

Define your substrate:

After inserting a Circuit Design, right-click on Data under project tree, choose Add Substrate Definition. This brings you to Substrate Defintion window that gives you many optios of substate types. You can choose the type of substarte you need and enter the dielectric and trace metalization information as shown in Figure 1. This substrate is used in calucalation of line impedances.

(a)

(b)

Figure 1. (a) Substrate Definition options of substrate types, (b) the definition of strapline used in this blog.

Define your stackup:

The stackup in Circuit is very similar to the stackup in HFSS 3D Layout. Please note that the definition of substrate is not automatically transferred to the stackup. The stackup needs to be defined by the user. Select the Schematic tab and from the top banner choose Stackup. Then define each layer. This stackup will be used in creating the layout and transferring it to HFSS 3D Layout.  Figure 2 shows the stackup used for the FR4 substrate that was defined in Figure 1(b).

Figure 2. Stackup definition that will be used to transfer the layout to HFSS 3D Layout.

Create the circuit:

Circuit provides a large selection of component libraries. To see the Component Libraries, click on View and check Component Libraries. In the Component Libraries window look for Distributed and expand it. Under this category you see different types of PCB structures. We will use Stripline library. Expanding Stripline library there are various categories, including Transmission Lines. We need Transmission Line Physical Length component, as we would like to use pieces of transmission line to create an ideal branch line coupler. You notice by hovering the cursor on the name of the component a small information windows shows the symbol and information about the component, alternatively you can right-click on the name of the component and choose “View Component Help” to get to the complete help page about the component. Once a component is selected and placed in the circuit it will also appear under the Project Components list at the bottom of the Component Libraries list. This provides a quick way to reuse them (Figure 3).

Figure 3. (a) Component Libraries, (b) Project Components and information window.

Let’s choose a physical length transmission line and place it on the schematic window. By double clicking on the symbol the Properties window opens and can be modified. Explicit values or parameters can be used to define the line properties.

Are you starting to calculate the line impedance to figure out the dimensions? Wait, there is a tool here that helps you do that. Click on TRL to open the line calculator. The line can be synthesized based on its impedance and electrical size by choosing the correct frequency and clicking on Synthesize (Figure 4). Using physical length transmission lines (50 and 35 ohms) and Tee lines and 4 ports I created an ideal branch line coupler (Figure 5). I ran a frequency analysis to make sure the circuit is working properly.

Before moving on to export the layout to HFSS 3D layout we can do one more step. To keep the substrate definition and reuse it layer, click on File->Save As Technology File. This would save the definition of stripline substrate in the personal library. Next step is to export the layout to HFSS 3D layout.

Figure 4. Properties and TRL windows.

Figure 5. Branch line coupler schematic.

Export to HFSS 3D Layout:

Under Schematic tab, click on Layout, or from the top menu choose Circuit->Layout Editor. Notice that this layout editor is very similar to the HFSS 3D Layout window. Click Ctrl+A, to select everything. Then choose Draw form the top banner and click on Align MW Ports (Figure 6), notice that other tools are also available under Draw, such as Sanitize Layout and Geometry Healing. You might need to do a bit more corrections and cleaning before exporting the layout. Before exporting the geometry, you can also check the HFSS Airbox using Layout->Draw HFSS Airbox.

Figure 6. Aligning ports.

You may change the orientation to Isometric for a better view of the box (Figure 7).

Figure 7. Layout editor in Isometric orientation, showing the HFSS airbox.

Make sure everything is still selected or select them with Ctrl+A, then under Edit, choose Copy to HFSS 3D Layout.  Now an HFSS 3D Layout design is created. Open the design. There might be a few things you like to change. Expand the ports, the name of the ports might have changed. You also note that the ports are of Gap type. You can select the port and in the Properties window, under HFSS click on Gap and choose the Wave port. Just note that the wave port cannot be internal to the design. You might need to adjust the air box size or create PEC port caps in HFSS later.

The second point to consider is about the parameters defined in Circuit. Remember that we defined W35 and W50 as the line widths in Circuit. The parameter are transferred but several local variables are also created based on them. For example click on the 50 ohm line. The width is now shown as a new parameter. You can see the complete list of parameters that are created by choosing HFSS 3D Layout->Design Parameters. Under the Parameters Default you still see W35 and W50, but moving to Local Variables tab you see the parameters created based on the Parameters Default.

Figure 8. Properties window.

Export to HFSS:

Any HFSS 3D Layout design can be exported to HFSS. Click on Analysis from the project three. Right-click and Add HFSS Solution Setup (Figure 9). There is no need to run this analysis. It just needs to be created. Right-click on the HFSS Setup that was just created, select Export->HFSS Model (Figure 10). Select the name and location for this file. Open this file and examine the model. Notice that the parameters are not transferred to HFSS model, this is because all parts of the model are imported (Figure 11). The default ports (Gap ports) appear as lumped port. If you changed the Gap ports to Wave ports in HFSS 3D Layout, it is now the time to add the PEC port caps or change the airbox to make sure ports are not internal to the model.

Figure 9. Adding HFSS solution setup.

Figure 10. Exporting the layout to an HFSS model.

Figure 11. HFSS model.

It is important to note that the type of analysis in Circuit is different than HFSS which will lead to slightly different result (Figure 12), which is expected and emphasizes the value of simulating structures in a full-wave field simulator like HFSS.

(a)

(b)

Figure 12. (a) Branch-line coupler S parameters from Circuit model, (b) the imported HFSS branch-line coupler S parameters.

Conclusion

This was a short blog showing the workflow for importing PCB and planar designs from AEDT Circuit to HFSS 3D Layout and HFSS. The workflow is a good method to quickly create the HFSS model of a planar structure.

If you would like more information related to this topic or have any questions, please reach out to us at info@padtinc.com.

Project Management for Non-Linear Dynamics Simulation with ANSYS LS-DYNA

We spend a lot of time writing articles about how to use the very capable tools that are available from Ansys, Inc., but tend to skip over the project management side of simulation. But, project management can be as important, especially for challenging simulations, as the technical aspects.  We recently completed a series of Non-Linear Dynamics simulations with ANSYS LS-DYNA and ended up learning a lesson or two about how to get such projects done on time and on budget.

What is Non-Linear Dynamics Simulation, and what makes it different?

When materials are deformed so fast that the rate of strain changes material properties, we refer to that as non-linear dynamics. In non-linear structural simulation, the material may be distorting in a non-linear way (usually plasticity), but the non-linear properties are dynamic. Because of this, time gets involved in the equation, as do non-linear material properties.  Think car crash, metal forming, drop, bird impact on windshields and jet engine blades, and bullets going through stuff. 

There are various software tools in the Ansys family that can do the non-linear dynamics, but our preferred program is Ansys LS-Dyna.  It is an explicit dynamics solver that solves structural, fluid, thermal, and other physics.  It is an amazing program that does many things. Still, for the class of problem we are talking about here, we only care about time-dependent material non-linearity for structural deformation.

Setting expectations

Before beginning a project of any type, it is important to establish goals.  Non-linear dynamics is no different. What is different is that you have to be realistic about what goals you can achieve.  The events you are modeling are, by their very nature are very, well, non-linear. The answers you calculate can change drastically with mesh, loads, material properties, and solver parameters.

If you need high accuracy, then you need to set the expectation that it will take longer to solve, and you have to be more careful with your model. If you don’t need accuracy and you may be looking for relative improvements, like seeing if one geometry option makes things better or worse in your design, then you can back off and be less detailed.  This difference can have a large impact on your schedule and overall cost.

So before you plan, before you start gathering information, decide what you expect to get out of your model.

Planning for the Job

Once you have set your expectations and goals, it’s time to map out the project. It is not that different from most structural or vibration jobs. You still have to get geometry, create a mesh, define loads and constraints, apply material models, run, and post processes.

However, each of those steps can be different for non-linear dynamics.  Here are some critical issues to be aware of when producing a schedule:

  • Geometry
    If you are working with thin, especially sheet metal, parts, you probably want to use shells. They are more efficient and can be more accurate in many situations. You need to not just have a CAD model, but also a model that has the mid-plane surface defined as well as thicknesses.

    You also want to look at removing tiny features that don’t impact the solution.  The run time in an explicit dynamic solver is driven by the smallest element size. If you have tiny features relative to your overall geometry, capturing them can drive up your run times.  So set aside time to remove or simplify them.
  • Meshing
    As mentioned above, small elements can drive up run time. Also, distorted elements or elements that become distorted can cause your solutions to diverge and fail. You may (probably) need to create a hexahedral (brick) mesh.  All of these things require more time to create the mesh, and from a project standpoint, you need to plan for that.
  • Contact
    Ansys LS-Dyan rocks at contact.  It is pretty much automatic in most cases. So here, you don’t have to set aside time to define and tweak your contacts to get convergence. But there are many options, including erosion and other fancy options. Understand your contact needs and track and manage them.
  • Loads
    Everything in LS-DYNA is time-dependent, and loads are no exception.  If you are lucky, your load or loads are constant over time. But if not, you need to set aside time to characterize those loads and get them specified in the right format.  In addition, loads can be calculated, say the results of an explosion or an airbag deployment. These use Equation of State models to calculate forces on the fly and are a major advantage of the tool.
  • Solving
    From a project management standpoint, it is very important to plan for relatively long solves, restarts, and if possible, solving several jobs at the same time.  Non-linear dynamics is computationally intense. Do some trade studies on computer resources vs. schedule time.  Is it worth investing in more cores to solve faster or just let it chug away on a smaller computer? Also, don’t assume a single run to get the answer you want. Often you need to run the model multiple times before you understand what is really going on.

  • Post-processing
    We are solving highly non-linear events, and understanding what the model is telling us is the whole point of the exercise.  Budget time for processing massive amounts of data over time and reducing it into something useful. Also, time is needed to create animations.  The analyst may also find themselves buried in the weeds at the post-processing stage, and project management should take on the role of reviewing the results from a big picture perspective and drive what tables, graphs, plots, and animations are created.

Keeping the project on the rails when things are literally blowing up and crashing

The dynamic nature of both the events being modeled and the process of creating and running the models make for a less predictable progression for the project.  A project manager needs to pay close attention to what is going on at all times and pull the engineers doing the work back up for air to find out where things are going. 

Here are some things to watch out for:

  • Building a model that is more complex than needed
  • Making sure that the situation being simulated in the model is what the customer needs simulated
  • Too much time being spent to fit the model on a limited computer. Get a bigger computer.
  • The simulation engineer is fixated on details that don’t impact the solution much
  • Oversimplification of components, connections, and loads.
  • Science project mode – spending time trying to learn basic information or trying to get something new to work, and not solving a specific problem.

One of, if not the most important roles for the project manager is communication.  Constantly interacting with the engineers (without nagging) and with the customer (the person who will consume the results) is critical.  This is not a throw-it-over-the-wall type of project.  And the more you accomplish, often the more you have new questions.  It may take two weeks or nine months. But either way, the PM needs to be constantly talking to everyone involved.

And yes, here at PADT, we have actually modeled a train car going off the rails. The project, though, stayed on track because we kept a close watch and stayed focus on the specifications. Things did surprise us, and we had to change some of the model when we got the first results, but we planned for that, communicated with the customer, and kept our changes to what was needed to answer the customer’s questions.

Our cars have incredible crash safety, very few planes fail because of bird ingestion, and we create amazing components out of formed sheet metal because of this type of non-linear dynamic simulation, and in most cases, Ansys LS-Dyna. Proper project management that recognizes the challenges and differences for this type of project can make a massive variety of products even better.

Electronics Reliability Updates in Ansys 2021 R1 – Webinar

Best practices for ensuring and predicting electronics reliability require comprehensive multi-physics simulations. Ansys ensures reliability success by developing solutions and workflows that overcome today’s biggest simulation and design challenges. 

With Ansys 2021 R1, electronics reliability became much easier to manager with advanced capabilities for design democratization, workflow automation, and robust reliability predictions. Along with these updated components, users can better access integrated workflows between Ansys Sherlock, Icepak, Mechanical, LS-Dyna, and more to provide the results necessary to optimize product designs and ensure unparalleled reliability in the field. 

Join PADT’s Systems Application & Support Engineer Josh Stout for a presentation covering updates to existing features and the introduction of new tools available in this latest release. Learn how users can:

• Extract detailed geometries from any ECAD file

     • Predict time to failure before prototyping

     • Perform complex multiphysics analyses

     • Implement automation and optimization 

     • And much more

Register Here

If this is your first time registering for one of our Bright Talk webinars, simply click the link and fill out the attached form. We promise that the information you provide will only be shared with those promoting the event (PADT).

You will only have to do this once! For all future webinars, you can simply click the link, add the reminder to your calendar and you’re good to go!

All Things Ansys 086: Thermal Integrity in Ansys 2021 R1

 

Published on: April 20th, 2021
With: Eric Miller & Josh Stout
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Systems Application & Support Engineer, Josh Stout in order to discuss what is new with regards to thermal integrity in Ansys 2021 R1.

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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@ANSYS #ANSYS

A PADT Engineer in King Attiball’s Court – Chapter 3

There just is not enough engineer-focused fiction out there. Romance, Horror, Sci-Fi, Young Adult, Historical, Mystery, etc. They all do well, but they are rarely written for the engineers of the world.

Here at PADT, we are all about undoing such injustices. We decided to brainstorm a story about an engineer who does simulation and 3D Printing and ends up on an adventure. We hope they will find some mystery, some science fiction, and some horror. Maybe even a little romance. To develop the characters and the plot we all got on an MS Teams meeting and blocked it out. It was a lot of fun. That turned into an outline, that will turn into a chapter every month.

We hope you enjoy the result as much as we enjoyed dreaming the journey up.

It should be noted that every character in this story is completely made up. Sometimes we steal some names from real people as a shoutout to them, but that is about it. PADT does not have a basement or a fancy cluster in one. Everything is made up. Well, almost everything. We do have a stack of furniture in the back of shipping and receiving.



Chapter 3
Like an Owl

It was comforting for Ash to learn that food tastes had not changed so much over the millennia. Sitting in that courtyard under those trees, the marinated vegetables and stewed meats in the bowls Mnihh’dm had brought out tasted wonderful.  And the bowls of watered wine quenched her thirst and had just enough flavor to taste good and alcohol to kill the microbes living in the local water supply.

Verihbitt explained each dish and sampled them with Ash.

She then drained her bowl of wine and reached over to touch Ash’s leg. “You have eaten and drunk. Are you ready for questions?”

Ash was ready. “Sure, I guess now is as good a time as any.”

“Are you a witch?”

She was a little stunned by the question but had to remember that everything about Ash’s world was magic to this woman. It was best to address that head-on. How do you explain to an ancient Babylonian what an engineer is? She gave it a try.

 “No, I am not a witch. But I am a scholar and an artisan. I study the world around us, and I use what I learn to make things that make life better. Tools that people use.”

Verihbitt thought for a while. “Like the King’s architect?”

“In a way.” Ash pushed down some of the jokes about civil engineers that she had learned in college. “I get paid to solve problems but not to build structures.” She could not resist. “Nor do I design ditches.”

“It is normal for a woman to do such things where you are from?”

Ash laughed, remembering all the meetings where she was the only woman in the room. “Not as normal as it should be. But it is getting better.”

“Well, here it is good for a smart woman like yourself to speak through a man. Some will listen to a wo-“

The sound of shattering wood interrupted Verihbitt as the gate to the courtyard exploded and rained splinters down on the two women. It was quickly followed by the angry shouts of three men who rushed through the opening, spears in their hands. They stopped momentarily to scan the courtyard, then rushed towards Verihbitt.

Without thinking, Ash stood and kicked the low table, bowls and all, towards the approaching men. It slowed them down enough to give Verihbitt time to dart behind the nearest tree.  She reappeared with her own spear, and in one fluid motion,  launched it at the closest attacker.

Another spear flew by Ash’s head before it thudded into the chest of another attacker. She looked back as Takaa, who must have been sitting in the far corner of the courtyard behind a thick pillar, grabbed another spear. He sent it past her ear, and she heard another thunk as it landed.  She ran towards Takaa and dived behind the column.

“Fight or flight,” she said between gasping breaths. “I guess flight wins out today.”

The sounds of a struggle grew louder. There were grunts and cries of pain, but no screaming. After only a few seconds, the sound stopped, and she heard heavy boots approaching her.

“Are you harmed, my lady?” It was the voice of Takaa. Ash relaxed.

Ash stood and came out from behind the column. “I am just a little shaken. I didn’t help much.”

Verihbitt appeared behind Takaa and said, “Well, we know you are not a witch. You cast no spells. But kicking the table at them did slow them down.  Thank you.”

Minihh’dm came flying through the door into the house, short sword at the ready.

“My princess, Verihbitt, you are covered in blood. Are you injured?”

Stunned, Ash looked at Verihbitt and could only say, “Well, I may not be a witch, but you appear to be a princess?”

The next half hour was another blur of activity. Takaa ran outside and returned a few minutes later with a chariot let by a beautiful gray horse. All four of them clambered on, and Takaa steered them down a maze of narrow passages, knocking over stalls and more than a few people who could not get out of the way fast enough. At some point, Ash had to close her eyes and hold on as hard as she could to the two-wheeled cart’s railing.

She opened her eyes when Verihbitt told her that they had exited through the eastern gate. Farmland stretched out along the rolling hills. There was still some dodging around donkey carts, and it was too loud to talk. Which was good. Ash needed the journey to process all that had happened. She had never seen someone killed before.  And certainly never with a spear.

Takaa guided the cart off the main road up a dirt track that led up a small mountain. A large stone building stood on top. Mnihh’dm yelled over the din into her ear, “The King’s summer palace. We will be safe here. And no, to answer your next question, your hostess is not the King’s daughter, but she is his niece.”

Ash did not know what to expect as the chariot passed through the gate to the building. The outside was simple stone, and she had only seen artist’s guesses at what a Babylonian summer palace would look like.

The bright colors were stunning. There were statues and frescos everywhere. What Ash had seen in books and online was not even close to what she saw in front of her. The large courtyard was surrounded by two stories of buildings. And every surface she could see was covered with paintings or sculptures.

Ash got off the chariot when it stopped, and she was thankful for Verihbitt’s steadying hand.

She said, “that was some ride. I was not sure I would be able to hold on much longer.”

Verhibitt laughed. “In my line of work, you often have to make a quick escape on a chariot.”

“As a princess? I always thought that involved sitting on pillows and being fed by servants.”

“No.” Verhibitt looked at Ash sideways, smiled, said, “I am also a spy,” and ran across the courtyard towards a man in bright robes.

Ash looked more closely at the far side of the courtyard as she walked towards it. The man stood with Verhibitt at the bottom of a large dirt ramp, and hundreds of shirtless men were pulling a stone slab up the ramp on large wooden rollers using two ropes. She could tell there was a carving of some kind of the top surface of the slab. The wall was covered with scaffolding, and it looked like they were going to hoist a giant stone carving up onto the top of the second story.

Verhibitt was waiting for her at the foot of the ramp, her right arm entwined with that of the older man in bright robes.

“This is my father, Prince Batnoam. One of the King’s brothers and, more importantly, the King’s Architect. He is one of those people who build walls and ditches.”

Feeling a little embarrassed, Ash bowed to Batnoam.

The prince nodded his head in acknowledgment and said, “welcome, my child. My darling Verhi has been breathlessly telling me about your adventures today. I have to admit I could not follow half of it, so I want to know more at dinner.”

He snapped his fingers, and two women in simple robes appeared as if from nowhere. “Please prepare rooms for my daughter and her friend.”

“While we wait for that, let me show you our latest project. This is a piece that shares the story of my glorious brother’s latest conquest in the East. It took almost a full year to carve and most of the summer season to bring up the hill on rollers. Today, we will pull it up to the top of the wall and secure it. We will then spend another week digging out the ramp under it to lower it down against the wall.”

“And you will spend even more of my money doing so.”

Ash turned to see a tall man dressed in shining brass armor taking purposeful steps up the ramp. A dozen soldiers and a cluster of men in robes struggled to climb behind him.

Everyone bowed to him, so Ash followed their motion.

Boatnoam said, “My brother, when you came back from the East you told me you wanted something grand to celebrate your victory. Nobles will flock to the summer palace just to see this story immortalized in stone.”

“Yes, yes. That is what you always say. Then you ask for more money, and it is always too late for me to back out.”

While listening to the Prince and King jest with one another, Ash looked up at the slab and how they were lifting it. Iron rings were attached to the top of the wall and, ropes went from the slab, through rings, and back down to the teams of men who were pulling. Up next to the rope, she could see two boys were slathering grease onto the rope to reduce friction.

The teams pulled, the King and prince argued, and the boys kept applying grease as the slab slowly moved on the wooden rollers. Ash soaked in the pure joy of seeing ancient engineering at work.

And then, for the third time that day, someone tried to kill Ash.  

Two men who had been walking next to the ropes on either side of the ramp pulled out large axes and, in unison, swung down on the taught rope. With a loud twang, the ropes split, and the slab began to roll down the hill. It headed right towards Ash, her new friends, and the King.

She screamed, “The slab is loose, run!”

She raced to the side as others ran down the ramp in front of the slab. The air was filled with dust, but she could see the stone crash onto the flat courtyard and stop. There were shouts and screams from a large crowd gathered around the slab. Ash ran down the ramp to find Prince Batnoam trapped. A split roller kept the slab from crushing the prince completely, but it was apparent that both of his legs were trapped.

The King screamed for everyone to come out and to fetch new ropes. But Batnoam saw the same thing Ash did. If they pulled the slab in any direction, it would come off the roller and crush him.

“Brother, I think we need to lift it.” In between gasps of pain, the architect described his latest scheme. “Put stakes in the dirt mound to keep the slab from moving. Then attach ropes to the far end up through the iron loops. Then pull to tilt it up and off of me.”

Ash looked at the geometry. The angle was too low. There was no way they could lift the slab. She decided to speak.

“Your highness, although this idea is close, I do not think it will be enough to lift the stone. In my land, we use a different method to lift large items. Might I try that?”

“No.” Said the King. “We will do as my brother’s asked, not the musings of a foreign girl.”

The next half hour was busy. The workers were able to wedge some more wood under the stone to relieve a little pressure. But no matter how many men or oxen they put on the ropes, they could not lift the stone.

As the sun started to set, Batnoam gestured for the King to come closer. “Brother, it is getting late, and we are losing light. And I do not want to miss dinner.” The King laughed at his brother’s bravado. “Bring torches and, maybe we should let the foreign girl try.”

The King reluctantly nodded towards her, and Ash sprang into action.

“Someone bring that scaffolding over here, the tall one there, and put it over the end of the slab.”

She walked to a group of men who had been pulling on the ropes and said, “You need to gather me two of thickest rollers you have. And more rope, lots of rope.” She shouted after their retreating backs, “And lots of grease.”

It had been years since Ash had studied how a simple tackle worked. But, while others had been attempting to lift the stone, she had been sketching her idea in the dirt. The top roller would be attached to the scaffolding. A rope would be attached to either end of the lower roller, looped up over the top roller, back down around the bottom roller, then over the top roller again. This configuration would provide four times the lifting force, minus all the drag from the ropes rubbing on the rollers.

It took close to an hour to build the rig. No one had spoken to Ash while it was being created and they followed her orders with obvious irritation. But, the King had sanctioned this approach, so they worked at it.

When the rig was ready, she had two teams of twelve men at the ends of each rope.

“You need to pull together so that it lifts the same on both sides.” She shouted to them. “At first, it will not move much. But it will move. Try now.”

Ash put her hands behind her back and crossed her fingers. In English, she whispered, “Freshman statics, don’t fail me now,”under her breath.

They pulled, and the scaffolding creaked. And then the ropes began to stretch. The slab didn’t move.

“Keep pulling!”

The men just stood and looked at her.

The King shouted, “Pull, you dogs, or I’ll toss all of you off the top of that wall.”

With the King’s orders, they pulled again, and the lower roller began to rise, pulling the slab with it.

“One more pace back!” shouted Ash.

They heaved one more time as one, and the slab lifted again. Other builders quickly placed wood blocks under the slab while a soldier pulled the King’s brother from under the stone.

Once clear of the stone they moved him to stretcher.  Batnoam took his daughter’s hand and says, “I do like this new friend. She is wise, like an owl.”

Everyone was focused on the prince and getting him to his rooms, and they stopped paying attention to Ash. So no one noticed when she lost consciousness and crumpled to the stone paving of the courtyard.

“bzzzzzz.” “bzzzzzzzzzz.” “bzzzzzz”

Ash wasn’t sure if she was dreaming or not. She opened her eyes to a dark room. The full moon was shining through open windows and a light sea breeze filled the room with humid, salty air.

“bzzzzzz.” “bzzzzzzzzzz.” “bzzzzzz”

Sitting up, Ash looked around the room. She was a little light-headed but felt better than she expected. The moonlight illuminated her backpack in the corner of the small room. She walked towards it, and the buzzing got louder. It was her phone.

Fumbling a bit, she found it in the outside pocket.

“bzzzzzz.” “bzzzzzzzzzz.” “bzzzzzz”

She turned it over in her hand and pressed the action button. The screen lit the room, showing her a single text message.

ALEX A: “Where did you go? One second you were here. Then you were gone. The system has locked me out. I thought you had gone on your vacation, but the police came looking for you just now. Are you OK?”

At first, Ash thought this must be a message that he had sent right after she had been tossed back into time. She checked the time. It said 5 min ago. The signal strength in the upper right corner showed one bar.

She quickly typed a message.

ASH: “I’m here. OK, all things considered. Let me know if you get this.”

She waited for a second, bathed in the moonlight that shined through an open window of a Babylonian King’s summer palace.

ALEX A: “Whew! 😊”

– To Be Continued –

Please subscribe to our newsletter, so you will know when the next installment, “Off to Sea,” is released, wherein our engineering hero finds out if she has sea legs and tries to communicate with the present.

Press Release: PADT Named EOS Metal 3D Printing Distribution Partner Across the Southwest, Expanding its Established Additive Manufacturing Products Offering

PADT’s model for over 27 years has been to become experts on the leading tool that engineers use, then become a reseller. We continue that model with our new partnership with EOS, the leader in Metal 3D Printing. We have been a user of several metal Additive Manufacturing solutions for some time, settling on EOS’ DMLS technology last year. We are now pleased to announce that that technical relationship has grown to include PADT as an EOS Distribution Partner for the Southwestern United States.

More details can be found in the press release below. You can see the official press release in PDF and HTML as well.

What does it mean for our customers? The same technology-driven win-win relationship you have come to count on for Ansys, Stratasys, and Flownex are now available if you need to add metal 3D Printing. And after your purchase, when you call for assistance you will talk to people that run the same machines you are.

Have questions? Why EOS or what machine would be best for you? More details on the metal systems can be found on our website. But the best way to learn more is to contact us at info@padtinc.com or 480.813.4884

If metal 3D Printing is part of how you make innovation work, PADT is ready to help.


PADT Named EOS Metal 3D Printing Distribution Partner Across the Southwest, Expanding its Established Additive Manufacturing Products Offering

Building on its Expertise in Metal 3D Printing Services and R&D, PADT Adds Metal Laser Powder Bed Fusion Systems to its Sales Portfolio

TEMPE, Ariz., April 13, 2021 PADT, a globally recognized provider of numerical simulation, product development, and 3D printing products and services, today announced it has been named Distribution Partner for EOS’s full lineup of industrial metal 3D printing systems. Founded in 1989, EOS is a leading technology provider for industrial additive manufacturing of metals and plastics. PADT will represent the company’s Direct Metal Laser Fusion (DMLS®) powder bed fusion systems across Arizona, California, Colorado, Idaho, New Mexico, Nevada, Texas, and Utah.

“PADT is experiencing explosive growth,” said Jim Sanford, Vice President, Sales & Support, PADT. “Our new partnership with EOS helps us serve our customers and expand their 3D printing options with this impressive lineup of systems. Metal materials are the next major frontier in 3D printing innovation and PADT is an early adopter. We continue to explore new ways to apply the technology to meet our customer’s evolving needs.”

EOS’ metal 3D printing platforms use proprietary DMLS technology that meters and deposits ultra-fine layers of metal powders and then melts each layer – as defined by a 3D CAD model – using high-powered lasers. The applications produced with DMLS are highly accurate, highly dense, and allow for incredible functionality at a cost that can be less than traditional manufacturing. DMLS printers are considered the industry standard for oil and gas components, consolidated and lighter-weight aerospace applications, and custom medical solutions such as guides and implants that improve patient outcomes.

PADT will sell EOS’  metal 3D printing systems, including the company’s small and medium systems, EOS M 100 and EOS M 290; and its large production platforms, EOS M 300 Series, EOS M 400, and EOS M 400-4. PADT has installed an EOS M 290 machine onsite to develop high-quality end-use metal products for customers and expand its ongoing research and development of metal 3D printing.

“As 3D printing technology has advanced, PADT has seen an increase primarily in the aerospace and defense industry’s use of 3D printing for end-use parts,” said Rey Chu, co-founder and principal, PADT. “Metal 3D printing provides many benefits over traditional manufacturing, including lighter, cost-effective parts made much faster and with greater design freedom. The EOS machines provide PADT’s entire range of customers with a wide variety of options to produce metal parts quickly and effectively. Those same advantages will benefit any industry that has a need for low volume production of complex metal parts.”

“PADT is a long-time leader in 3D printing systems and services since the early 1990s with a proven track record of identifying advanced manufacturing trends and helping customers integrate 3D printing innovation into their manufacturing operations,” said Andrew Snow, senior vice president at EOS North America. “We look forward to deepening our reach across the Southwest, a leading hub for aerospace and defense customers, through our partnership with PADT.”

To learn more about PADT and its new lineup of EOS metal 3D printing products and accessories, please visit www.padtinc.com.

About PADT

PADT is an engineering product and services company that focuses on helping customers who develop physical products by providing Numerical Simulation, Product Development, and 3D Printing solutions. PADT’s worldwide reputation for technical excellence and experienced staff is based on its proven record of building long-term win-win partnerships with vendors and customers. Since its establishment in 1994, companies have relied on PADT because “We Make Innovation Work.” With over 90 employees, PADT services customers from its headquarters at the Arizona State University Research Park in Tempe, Arizona, and from offices in Torrance, California, Littleton, Colorado, Albuquerque, New Mexico, Austin, Texas, and Murray, Utah, as well as through staff members located around the country. More information on PADT can be found at www.PADTINC.com.

About EOS

EOS is the world’s leading technology supplier in the field of industrial 3D printing of metals and polymers. Formed in 1989, the independent company is pioneer and innovator for comprehensive solutions in additive manufacturing. Its product portfolio of EOS systems, materials, and process parameters gives customers crucial competitive advantages in terms of product quality and the long-term economic sustainability of their manufacturing processes. Furthermore, customers benefit from deep technical expertise in global service, applications engineering and consultancy.

Mechanical Analysis Updates in Ansys 2021 R1 – Webinar

Ansys 2021 R1 delivers significant improvements in simulation technology together with nearly unlimited computing power to help engineers across all industries reimagine product design and achieve product development goals that were previously thought impossible. 

With updates made to Ansys mechanical, users can easily handle the complexity of a variety of design environments. Everything from mulitphysics analysis to dynamic simulation allows for the ability to create a product that meets performance goals and holds up over time. 

Join PADT’s Application Engineer Robert McCathren for a look at analytical advancements in Ansys Mechanical 2021 R1, including updates for: 

          ​​​​• Element Technology

          • NonLinear Adaptivity

          • Coupled Physics Analysis

          • Linear Dynamics

          • Contact

          • And much more

Register Here

Running Ansys Fluent on Ansys Cloud using a Journal File and a UDF

Cloud computing is becoming more and more popular with the recent changes in the work environment, and Ansys Cloud solution is no exception. While running a Fluent simulation on the Ansys Cloud is now a more familiar task among CFD users since its introduction around a year ago, there are still some cases that might be challenging and need more attention. One of these cases is performing a Fluent simulation using a UDF.

The first thing users might notice when launching an Ansys Cloud Fluent job through the ACT extension is that the UDF files won’t be uploaded, which is why they might see their cases are failing if they don’t pay extra attention. In order to avoid this issue, users must follow one of the options below.

The first and most commonly used method to launch a Fluent job with a UDF is via the CLI (Command Line Interface). With this method, the .c and all other files in the working directory will be uploaded to the Cloud. Then UDF will then be compiled on the Cloud.

Since the Cloud computers already have compilers installed, one doesn’t need to anything special. The local directory should have .c file, case file with UDF plugged-in, and a journal file. As a side note, Ansys Fluent 19.3 and higher supports expressions that can be used to define boundary conditions instead of UDF. Starting with Ansys Fluent 2020R2, the C compiler is built-in with the software. Please refer to the product documentation.

We highly recommend that the user should have the required compiler installed locally to compile, hook, and test the routine before submitting it to the cloud.

If you have not used CLI to submit a Fluent job to the clouds, please read the article below:

https://cloudforum.ansys.com/t/80njy9/how-to-running-fluent-on-cloud-using-a-journal-file-and-udf

In short, you have to open a command prompt (cmd.exe) and navigate to your working folder. This folder should contain all the Fluent input files needed for the run: journal file, case file, etc. Once you login using ansyscloudcli command, you are ready to submit your job on the cloud.

Below is a common example for the commands to run Fluent on the cloud:

ansyscloudcli runfluent -j fluent_via_journal --jou tjunction.jou –q Flexible_eastus_Standard_HC44rs_2020r2 -n 1 -m 36 -v 2020r2

Here is some description of these commands:

> AnsysCloudCLI runFluent -j <job name> [--jou <journal>] -q <queue>  [-n <num nodes>] [-m <max cores>] -v <solver version>
-j: job name
-q: name of the queue 
    (run: ansyscloudcli getQueues, to get a list of all queues. Queue name is case sensitive)
-i: name of the input file for the solver
--jou: journal to execute (if set, -i is not used)
-n: number of nodes
-m: (optional) max number of cores. Useful if you want to make a run with 4 cores on a computer with 16 cores
-v: target solver version

The second method is to compile the UDF locally and upload all files to a virtual desktop infrastructure (VDI) session. Then the compiled UDF can be used with Fluent through the VDI session. Note that the UDF can’t be compiled on a VDI session with versions 2020R2 and earlier.

Lastly, with 2021R1 Fluent has a built in Clang compiler which will allow you to compile a UDF in a VDI session. However, the Clang compiler still won’t allow you to submit a Fluent job with a UDF through the ACT.

Ansys Cloud VDI solution running on a local desktop via RDP

All Things Ansys 085: Additive & Structural Optimization Updates in Ansys 2021 R1

 

Published on: April 5th, 2021
With: Eric Miller & Doug Oatis
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Lead Mechanical Engineer, Doug Oatis in order to discuss what is new with regards to additive and structural optimization in Ansys 2021 R1.

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

Listen:
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@ANSYS #ANSYS

Experience Stratasys: Manufacturing – Virtual Reveal

In one blockbuster event, Stratasys will unveil the most complete set of new, best-in-class, additive manufacturing solutions the industry has ever seen.

From tooling and jigs and fixtures to mass production of end use parts, Stratasys is redefining speed, productivity, and agility in manufacturing.

Wednesday, April 28th, 2021 – 9:00 am CST

Register today to join us for a 30-minute virtual live reveal with Stratasys CEO Yoav Zeif. After Yoav’s exciting overview, we’ll conduct detailed breakout sessions and demonstrate how each of these new solutions will transform your manufacturing operations and help you seize a competitive advantage.

Secure your spot now – you don’t want to miss this unparalleled event!

Register Here

Thermal Integrity Updates in Ansys 2021 R1 – Webinar

With CAD-centric (mechanical and electrical CAD) and multiphysics user interfaces, Icepak facilitates the solving of today’s most challenging thermal management problems in electronics products and assemblies. Icepak uses sophisticated CAD healing, simplification and metal fraction algorithms that reduce simulation times, while providing highly accurate solutions that have been validated against real-world products.

This tool provides powerful electronic cooling solutions that utilize the industry leading Ansys Fluent computational fluid dynamics solver for thermal and fluid flow analyses of integrated circuits, packages, printed circuit boards, and electronic assemblies.

With the release Ansys 2021 thermal integrity capabilities saw improvements in a variety of areas. Join PADT’s Application & Support Engineer and Thermal Integrity expert Josh Stout to learn more about recent advancements surrounding: 

• Solar Radiation Modeling

     • Robust Meshing Distribution

     • Dynamic Thermal Management

     • The Release of AEDT Mechanical Solutions

     • And Much More

Register Here

If this is your first time registering for one of our Bright Talk webinars, simply click the link and fill out the attached form. We promise that the information you provide will only be shared with those promoting the event (PADT).

You will only have to do this once! For all future webinars, you can simply click the link, add the reminder to your calendar and you’re good to go!

All Things Ansys 084: The State of Mechanical Meshing in Ansys 2021

 

Published on: March 22nd, 2021
With: Eric Miller & Joe Woodward
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Senior Mechanical Engineer and Lead Trainer, Joe Woodward in order to discuss what new mechanical meshing capabilities are available in Ansys 2021.

Meshing is an integral part of the engineering simulation process where complex geometries are divided into simple elements that can be used as discrete local approximations of the larger domain. The mesh influences the accuracy, convergence and speed of the simulation. Furthermore, since meshing typically consumes a significant portion of the time it takes to get simulation results, the better and more automated the meshing tools, the faster and more accurate the solution.

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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@ANSYS #ANSYS

A PADT Engineer in King Attiball’s Court – Chapter 2

There just is not enough engineer-focused fiction out there. Romance, Horror, Sci-Fi, Young Adult, Historical, Mystery, etc. They all do well, but they are rarely written for the engineers of the world.

Here at PADT, we are all about undoing such injustices. We decided to brainstorm a story about an engineer who does simulation and 3D Printing and ends up on an adventure. We hope they will find some mystery, some science fiction, and some horror. Maybe even a little romance. To develop the characters and the plot we all got on an MS Teams meeting and blocked it out. It was a lot of fun. That turned into an outline, that will turn into a chapter every month.

We hope you enjoy the result as much as we enjoyed dreaming the journey up.

It should be noted that every character in this story is completely made up. Sometimes we steal some names from real people as a shoutout to them, but that is about it. PADT does not have a basement or a fancy cluster in one. Everything is made up. Well, almost everything. We do have a stack of furniture in the back of shipping and receiving.



Chapter 2
New Friends

“Tastes like sand.” That was the first thought Ash had as she began to wake up. The crunch she felt on her teeth and the nasty flavor reminded her of the time her brother buried her on the beach.

It was definitely sand.

As she became more aware, she realized it was in her nose as well. When she moved her hands, she felt more hot, dry sand. Laying there, trying to figure out what happened, she noticed the sound of waves and then seagulls.

The last thing she remembered was trying to keep her balance after submitting her CFD batch run on PADT’s new supercomputer. Passing out and waking up on what appeared to be a beach was not the usual result of pressing return on a batch command. Even if it was the wrong command. For a few seconds, she wondered if she was in a virtual reality simulation. But the gritty sand in her mouth was real. Her slowly reviving brain latched on to the idea that a good next step was to open her eyes.

She said, “OK, seagulls, let’s see what you look like.”

Ash was met with a view of a blurry beach with waves slowly working their way up and down a stretch of sand about thirty feet away. She tried to lift her head to look around, but her body did not cooperate.

“Let’s try toes.”

She was able to move those, but didn’t feel sand. Good, it seemed her hiking boots were still on. She was able to move her arms slightly across the warm sand.

“Progress,” was her comments to the gulls she could see skimming the shoreline, occasionally diving into the water.

Before she found the strength to lift her head again, she heard voices. It sounded like two children. As the sound became louder, she could tell they were not speaking English. With a start, she realized they were talking to each other in a heavily accented version of Phoenician.

Ash heard what sounded like a little girl shout, “On the beach, see, it’s a goddess!”

This was followed by a boy’s voice responding, “No, it’s just a foreigner. Probably a slave.”

Ash said in English, “I am neither a goddess nor someone’s slave, thank you very much.”

Using as much strength as she could muster, she raised herself up and faced the two kids.

Ash spat out some sand and croaked, “Where am I?” in her best Phoenician.

Both the kids were thin with dark olive skin and long, kinky black hair. They were both wearing torn and dirty tunics, and they stared at Ash with a mix of fear and curiosity. The boy held a long stick, which he raised and used to poke Ash in the shoulder.

“Ouch!”

The girl said, “She talks as funny as she dresses.”

Ash took a deep breath and tried again, speaking slowly. “What. Place. Are. We. Near?”

Poking her again, the boy answered, “Sur. The center of the world.”

Ash recognized the Phoenician name for the ancient city of Tyre on the coast of what is now Lebanon. She remembered studying it in college and how it was built on a rocky peninsula that jutted out into the Mediterranean. Looking up the beach, she could now see beige stone walls rising from cliffs that protruded into the water. Smoke rose from behind the walls and a few tall masts poked up above the city.

This made no sense. Ash’s head began to spin as the craziness of the situation hit her. She was sitting on a beach, speaking with two children in ancient Phoenician, and what appeared to be an actual ancient walled city was within walking distance.

In English, she said, “This is crazy. It must be a dream.”

She tried to stand and became very dizzy. Her vision blurred and then began to fade to black.

When Ash woke up, she found herself on a pile of straw in a small room. It smelled of smoke and animals. Light was streaming in from an opening about two-thirds up one of the mud walls.

Her head did feel clearer. When she tried to stand up, she realized that her backpack was still on her back. She unclipped it and swung it to the floor as she walked to the opening. Looking out, she saw a collection of buildings clustered around a small harbor that was full of boats of different sizes. The paths that weaved between the buildings were full of people wearing tunics and robes. It was loud. I was also very smelly.

Ash struggled to get her head around what she saw. After a few minutes, she stopped trying. Realizing that the best way to deal with this was to just go along with it, she bent to open her backpack and took out her Phoenician clothes.

“When in ancient Phoenicia, do as the ancient Phoenicians do.”

Minutes later, Ash found herself moving with the flow of people down a narrow street. The sights and sounds began to excite her. This was an excellent simulation of what Tyre must have been like. She passed stalls full of food, cloth, pottery, and bronze implements.

Stopping in front of a pottery stall full of beautiful pieces of different sizes and shapes, she said to herself in English, “I need to share this with everyone.”

Without thinking, she reached into her pocket, took out her mobile phone, and raised it to take a picture. The stall was in the shade, so the flash went off.

That was when the merchant, followed by what seemed like everyone in the street around her, turned on Ash.

They were all shouting. She heard, “Magic!” “Foreign Sorcery” “She’s a Demon!” “Witch!”

It was the term “witch!” that took over. Soon they were all shouting it while grabbing her and pulling her down the street. Several women started to grab bright pieces of cloth from stalls along the road and put them over her head. At one point, someone stole some sort of root vegetable and tied it to her nose.

Over the chaos of the growing crowd, she was able to see they were approaching a large open space raised platform in the center.. Pushing her forward, she found herself at the base of a small stage. The merchant that had started this whole thing jumped onto the platform and shouted, “we have found a witch!”

The crowd continued to shout, “A Witch!.” “Burn Her!” “A Witch!”

A well-dressed man joined the merchant on the platform and asked, “how do you know she is a witch?”

Someone in the audience answered, “She looks like one!”

Ash shook her head to try and bring some sanity to the insane scene around her. She called, “I m not a witch!”

The well-dressed man walked towards her, looked her over from sandals to scarves, and said, “ehh… but you are dressed like one.”

“They dressed me up like this!”

Someone behind her said, “Naah. No, we didn’t. No.”

Ash said, “And this isn’t’ my nose, it’s a false one.”

The man who seemed to be in charge reached down and lifted the nose off.

“Well, we did do the nose,” admitted one of the men holding her.

“Just the nose?”

“… and the scarves. But she is a witch!”

The crowd joined in. “Burn her. Burn her!”

The man motioned for Ash to be moved onto the platform and then spoke to the crowd. “I am Azmelqart. The King’s magistrate. Who here can tell me why you think she is a witch?”

Ash could now see the throng filling the square. A filthy man was working his way to the front. Once there, he said, “she turned me into a newt!”

“A newt?” asked Azmelqart.

The dirty man looked at his feet, then the crowd, and replied, “I got better,” in a small voice.

The crowd didn’t care. They started shouting “She’s a witch!” and “burn her!” again.

Azmelqart motioned for silence. “There are ways of telling whether she is a witch.”

“Are there? Well then, tell us!” demanded the merchant.

“Tell me… what do you do with witches?” asked Azmelqart.

“Burn them!”

Azmelqart nodded his head and then asked, “What do you burn apart from witches?”

Someone in the crowd answered, “More Witches!”

Azmelqart shook his head. A small boy walked forward and tentatively asked, “Wood?”

“Correct! So, why do witches burn?”

The boy looked at his feet and kicked at some stones. He then offered, “Cuz they’re made of… wood?”

Azmelqart smiled and said, “Goooood! Now, how do we tell if she is made of wood?”

Someone answered, “Build a bridge out of her.”

“Ahh, clever, but bridges can also be made out of stone. Does wood sink in water?”

“No,” said the merchant.

The boy added, “No. It floats!”

Someone in the crowd added, “Let’s throw her in the harbor!”

“What also floats in water?” asked Azmelqart.

Someone said, “bread.” Another guessed, “apples.” A third offered, “very small rocks.”

This last answer annoyed Azmelqart. People continued to make even more ridiculous suggestions until a clear, deep voice added, “A Duck!”

Bannal turned to face a man wearing bronze and leather armor on a horse. “Exactly! So logically…”

The merchant thought about it. Then he said, “if she weighs the same as a duck… she’s… MADE OF WOOD!”

“And therefore,” said Bannal.

The merchant thought some more and suggested, “a witch?”

The crowd took it up. Chanting “Witch,” “Witch,” “Witch” as they jumped up and down in the square.

With a look of triumph on his face, Azmelqart leaped from the stage and said, “We shall use my largest scale!” and the crowd followed him towards the harbor, leaving Ash alone on the platform.

“This is insane,” said Ash to the backs of the disappearing crowd. “I feel like I’m in a bad Monty Python skit.”

The only people left in the square were a young woman and an older, heavyset man. She was wearing a beautiful, ochre-colored dress that draped perfectly over her tall, thin frame. He was wearing a simple, very white tunic with a wide leather belt around his paunch.

“You certainly know how to get noticed when you come to a city for the first time,” said the woman. “I am Verihbitt, daughter of Batnoam. And this is my slave and faithful assistant in all things, Mnihh’dm.”

Ash walked towards them. “I’m Ash, daughter of…” She hesitated but could only think of her father’s real name. “Daughter of Alan.”

“Welcome to Sur, the center of the Phoenician Kingdom. You are obviously not from here or any other land I’ve been to. Where is it you come from?” asked the tall woman in a pleasant voice. Then she added, “but before you answer, let us leave the square and go to my father’s house. Before that idiot, Azmelqart, realizes he forgot to drag you to his scales.”

Mnihh’dm darted down the closest alleyway, and the two women followed.

Before long, Ash found herself in a small courtyard filled with olive and fig trees. Verihbitt motioned for her to sit on a stone bench as Mnihh’dm disappeared into a dark doorway.

“My guard,” said the young woman as she sat on another bench, “Takaa was the one that offered up the idea of a duck. I think it worked well, do you not?”

Ash caught her breath. “Yes, thank you so much. It was so strange, I did not know what to do or say. I cannot thank you enough. How can I repay you?”

Verihbitt’s face changed from stern and concerned to a beautiful smile. “Well, my father always tells me I am far too curious for my own good. And I am curious about you. Your payment must be telling me where you are from and why you are here.”

Ash contemplated what to say next. She could not tell this woman the truth. But she could stretch the truth to fit the situation.

“I was traveling in my land, a place far west from here, near where the sun goes to sleep each night.  I was… working on calculating some numbers and made a mistake that must have angered a god. Before I could fix my error, the room I was in began to shake, and all went dark. When I woke up, I was on the beach just south of the city walls.”

Verihbitt stared directly into Ash’s eyes as if trying to see if the tale was true.  She began to twist her hair in her fingers. Then she said, “that is an amazing story, one that a song should be written about. Even if it is not, I sense, the complete truth.”

The two women looked at one another, not really knowing what to say. Ash was starting to panic when Mnihh’dm returned with a platter filled with bowls. He set it down on a tripod between the two women, turned to Verihbitt, and said, “I like her. I think she needs a friend.”

Ash looked at Verihbitt more closely. She had to be about the same age as Ash. Her hair was black and curly. Her skin was the same dark olive as everyone in the city. She could tell that this was a smart, confident, and caring woman. And that was precisely what Ash needed.

Ash ventured, “I truly could use a friend.”

Verihbitt leaned forward and lifted her cup. “To friendship then, and to the adventures that it brings!”

– To Be Continued –

Continue reading with “Like and Owl,” wherein the new friends fend off not one, but two attacks, a secret is uncovered about one of them, and Ash realizes she has a connection to the present day.

Please subscribe to our newsletter, so you will know when the next installment is released

Additive & Structural Optimization Updates in Ansys 2021 R1 – Webinar

The most powerful simulation solution for metal additive manufacturing, the Ansys Additive Suite delivers the critical insights required by designers, engineers and analysts to avoid build failure and create parts that accurately conform to design specifications. This comprehensive solution spans the entire workflow — from design for additive manufacturing (DfAM) through validation, print design, process simulation and exploration of materials.

Ansys 2021 R1 delivers enhancements across all portfolio products — Ansys Additive Prep, Ansys Additive Print, Ansys Additive Science and Ansys Workbench Additive — empowering users to further advance their additive manufacturing capabilities.

Join PADT’s Simulation Support & Application Engineer Doug Oatis for a webinar covering both the structural optimization and additive updates made to Ansys 2021 R1 including enhancements for: 

  • Process Simulation

  • Part Qualification

  • Design for AM

  • Build Setup

  • Shape & Lattice Optimization

  • And much more

Register Here

If this is your first time registering for one of our Bright Talk webinars, simply click the link and fill out the attached form. We promise that the information you provide will only be shared with those promoting the event (PADT).

You will only have to do this once! For all future webinars, you can simply click the link, add the reminder to your calendar and you’re good to go!

Press Release: PADT Named a Stratasys Diamond Partner

PADT’s long-standing relationship with Stratasys, the world leader in 3D Printing systems, continues to grow. The latest facet is our recent naming as a Stratasys Diamond Partner. We started this mutual journey as one of the first 3D Printing service providers to add Stratasys’ Fused Deposition Modeling. With that start as a customer we grew to become a reseller, then a supplier for support removal equipment, We also recently expanded our sales territory to include the state of Texas.

And now we are proud to be identified as a Diamond Partner, the top level for Stratasys channel partners. Please read the press release below to learn more about the details. You can also read the official HTML and PDF versions.

We could not have achieved this honor without two groups of people – our customers and our staff. PADT has the most amazing relationship with our 3D Printing users, who let us into their business to help them realize their additive manufacturing goals. And what those customers tell us is that our staff is amazing. From salespeople who have become trusted advisors, to our expert application engineers, to our service engineers who keep their machines running.

We can’t wait to see where the Stratasys + PADT journey takes us next.


The Southwest’s Leading Provider of 3D Printing Systems, Materials and Services, PADT, Named a Stratasys Diamond Partner

PADT has Served More Than 500 Customers With More Than 800 3D Printers Throughout Arizona, Colorado, New Mexico, Texas and Utah

TEMPE, Ariz., March 9, 2021 PADT, a globally recognized provider of numerical simulation, product development, and 3D printing products and services, today announced it has been named a Stratasys Diamond partner for its continued success selling the 3D printing manufacturer’s complete line of products and providing stellar support service. PADT becomes one of the few elite Stratasys resellers in the country to have achieved Diamond partner status.

“For more than 25 years, PADT has provided the highest level of 3D printing products, services and support to our customers across the Southwest,” said Jim Sanford, vice president, Sales & Support, PADT. “Earning the Stratasys Diamond partner designation is a result of the hard work of our team, and the continued respect of our customers.”

PADT became one of the first service providers in the country to offer fused deposition modeling (FDM) printing on Stratasys equipment in the late 1990s and has continued to expand its 3D printing capabilities as a service provider and reseller. The company built its customer base by providing outstanding 3D printing services and technical support across a wide variety of industries and organizations, from schools to startups, including some of the world’s largest aerospace organizations. To date, PADT has sold 883 printers to 506 customers across the Southwest.

PADT currently offers Stratasys’ complete portfolio of top-rated systems, accessories and materials, including full-color printing with PolyJet multi-material systems, robust and proven FDM manufacturing systems from desktop to those supporting advanced materials, and stereolithography for precision and finish.

“3D printing is a fast-growing industry that continues to expand its capabilities and quality year-over-year,” said Ward Rand, co-founder and principal, PADT. “We’re thankful for the strong partnership we’ve enjoyed with Stratasys, and with new technologies coming, we look forward to offering our customers even more choices to make 3D printing part of their everyday process to drive efficiency and cost-savings. This is especially true as we help our customers move from prototyping to creating tooling and production parts with Stratasys additive manufacturing solutions. 3D printing solutions from Stratasys are helping the world’s leading companies gain business agility and competitive advantage and PADT is proud to be a Diamond Partner.”

PADT now represents Stratasys in Arizona, Colorado, New Mexico, Texas, and Utah as an Elite Channel Partner at the Diamond level. To learn more about PADT and its 3D printing products and services, please visit www.padtinc.com.

About PADT

PADT is an engineering product and services company that focuses on helping customers who develop physical products by providing Numerical Simulation, Product Development, and 3D Printing solutions. PADT’s worldwide reputation for technical excellence and experienced staff is based on its proven record of building long-term win-win partnerships with vendors and customers. Since its establishment in 1994, companies have relied on PADT because “We Make Innovation Work.” With over 90 employees, PADT services customers from its headquarters at the Arizona State University Research Park in Tempe, Arizona, and from offices in Torrance, California, Littleton, Colorado, Albuquerque, New Mexico, Austin, Texas, and Murray, Utah, as well as through staff members located around the country. More information on PADT can be found at www.PADTINC.com.

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