KJZZ: Has Arizona’s Biotech Community Achieved Critical Mass?

kjzz-logoKJZZ’s Mark Brodie interviewed PADT’s Eric Miller as a follow on to the blog post Eric did on the AZ BioTech industry.  He asked great questions on where the industry is and what we should be doing next.

PADT Events – May 2016

April was a busy month, but May looks a bit more normal.  We hope to see some of you at the following PADT events happening in the next 5 or 6 week. You can also get a summary of what happened in April below.


iot_world_logo

May 11: Internet of Things World
Santa Clara, CA

A couple of us are headed to Santa Clara for this gigantic event.  No booth, we will be walking around and checking it out.  With so much of our work turning towards support IoT, we felt this was a good place to network and find other partners. Look for us if you are there… we will of course have PADT shirts on.


rapid-logo-100May 16-19: RAPID Show
Orlando, FL

The other big Additive Manufacturing show in the US is Rapid, held in Orlando, FL this year. PADT will be presenting at least one, and perhaps two times at this event. We will also be hanging out with Stratasys and other partners in the exhibit area.


SBIR-ConfMay 23: National SBIR/STTR Conference
National Harbor, Maryland

PADT will be visiting this years gathering on SBIR and STTR contracts.  It is a great opportunity to meet the program officers that are in charge of projects we are applying for as well as a place to meet other companies like PADT that are strong participants in the program.


PADT-Webinar-Logo

We have 4 fantastic webinars for May. All PADT webinars are recorded, so even if you can’t make the specified time register and we will send you a link to the recoreding.

Thursday, May 19, 11:00 AM
Overview of ANSYS Rigid Body Dynamics (RBD) and ANSYS Explicit STR
RegisterFriday, May 20, 1:00 PM
The Stratasys J750 – A new revolutionary full color 3D Printer
Register

Tuesday, May 24, 10:00 AM Phx
Overview of ANSYS SpaceClaim and ANSYS AIM
Register

Thursday, May 26, 10:00 AM Phx
Overview of ANSYS Customization Toolkit (ACT) and ANSYS DesignXplorer (DX)
Register


April Events in Review

April matched March in the number of events.  We made a lot of new contacts and were able to learn about some new industries and people.


amug-2Our 3D printing sales and services team got off to a great start at this years AMUG Annual Meeting in St. Luis. PADT’s Dhruv Bhate gave two very well received presentations.  Besides catching up with customers and partners, the team was able to check out the latest technologies in Additive Manufacturing


navy_sbire-1The RevAZ team at the Arizona Commerce Authority was nice enough to let PADT host their seminar on Additive Manufacturing and the Navy SBIR Program. We had a great turnout of over 30 people for the seminar put on by Jonathan Leggett, the NAVSEA SBIR Program Manager on how to better utilize the SBIR program. This was followed by one-on-one discussions with John and people from RevAZ.


SpaceSymposiumThis year’s Space Symposium in Colorado Springs was fantastic. The best part was meeting Bill Nye and learning more about the mission to mars. Even better was having our customers from different Aerospace companies meet in our booth and interact.


AZTC-Tucson-LnLThe Tucson tech community provided a great audience for our Lunch & Learn with the AZ Technology Council on “Innovation is easier said than done: Why skipping product simulation is no longer an option” Dan Hartman gave a great talk on the subject.


SMR-FlownexFlownex shined at this year the SMR 2016 conference in Atlanta. Many people in the nuclear field were able to see Flownex for the first time and get a feel for how powerful it is for designing a modular reactor.


There were two lectures to students in April. Dhruv Bhate crossed the valley and gave an inspirational talk to students at Peoria High School.  As always, the students questions and feedback were fantastic.  Later in the month, Ted Harris headed down to the University of Arizona in Tucson to talk to an engineering class about Finite Element Analysis.


nacet-design-daysApril also saw the start of a new initiative at PADT, Design Days. This is where some of our product development engineers visit incubators and offer up free advice for an hour.  Nothing too complicated, just one-on-one time for Startups with an experienced engineer.  We started at NACET in Flagstaff where we met some great inventors.  Next was a larger event at CEI in Phoenix followed by sessions at Chandler Innovations.


AZBio-2016The last big event in a busy month was the AZBio Expo in Phoenix. As always, this event is packed full of people in the Arizona Biotech space. We caught up with long time customers and met some new people. The talks were informative and at time entertaining.

Video: Product Development with PADT: How We Make Innovation Work

thumbnailProduct Development is a key part of what PADT does, but we often struggle with sharing what we do in this area and why we do it better. We are engineers.  To help, we put together this video that asks our engineers the key questions that customers ask every day, and their answers truly do show how “We Make Innovation Work.”

See something you like or have more questions, give us a call at 1-800-293-PADT or email info@padtinc.com.

A big thanks to TechTHiNQ and CEI for producing this video.

Phoenix Business Journal: ​Sensors and controls – Making a product smart enough for the Internet of Things

pbj-phoenix-business-journal-logoEveryone is talking about the Internet of Things, or IoT.  This is the first of four posts that look at what IoT is and how your products can take advantage of it. We start with “Sensors and controls: Making a product smart enough for the Internet of Things” to understand what makes a product smart, the first step in enabling a product for the IoT.

Phoenix Business Journal: ​Has the Arizona biotech community achieved critical mass?

pbj-phoenix-business-journal-logoThe Arizona BioTech industry has come a long way, but has it come far enough to be self sustaining?  In “Has the Arizona biotech community achieved critical mass?” I take a look at where we are and how close we are to this critical goal.

An Eye for the Win! – Signal Integrity with ANSYS

DDRComparisonIn today’s world of high speed communication we are continuously pushing the envelope in data throughput and reliability – There are many challenges that restrict speedy progress: Time – Spinning multiple boards to find and fix problems costs valuable time and money; Cost – additional test procedures can significantly add to this cost; Scalability of Solutions – it’s fundamentally difficult to accurately predict what might happen solely through previous experiences; which is often why multiple spins are required.

ANSYS has the simulation platform that enable signal integrity engineers to predict and improve the performance of high speed communication channels before any board is prototyped – Imagine being able get the design right the first time by testing several design parameters such as different trace routing, power profiles and components.

This sounds like a great proposition but in actuality what do you get from doing that? The answer is a reduced design cost, detailed insight into the design and a reduced time to market. The only way to obtain this “full picture” is to understand the electrical, thermal and mechanical aspects of the design.

EyediagramEye Diagram of Data Signal Obtained in ANSYS

A critical characterization in high speed communication channel design is the Eye diagram. Extensive testing is done to obtain Eye diagrams for various signal nets across a PCB or Package – ANSYS can provide the Eye diagram so that engineers can address potential failures and weaknesses in their design before it is sent out for prototyping. Bathtub curves, effects of jitter and identifying crosstalk are equally important in the design of communication channels and all can be obtained and considered with ANSYS tools.

ANSYS supports IBIS-AMI modeling, SERDES design, TDR measurement and Statistical Eye analysis among much more. With chip, memory and board manufacturers all utilizing ANSYS products it is easy to incorporate and analyze real world product performance of the entire PCB.

TDRTDR Measurement Across Net

ANSYS allows all aspects of the design to be tested and optimized before prototyping. Apart from signal integrity ANSYS tools can also accurately model power integrity concerns such as decoupling capacitor optimization, thermal response and structural issues, as well as cooling solutions for chips, packages, PCBs and full electronic systems. With the ability to analyze and help optimize different design characteristics of a PCB, ANSYS can provide engineers with “the full picture” to help reduce cost and time to market, and to understand the design’s expected real world operation.

VoltageDropBoardWarpageElectronicsCooling

Top: Voltage Drop; Middle: PCB Warpage;
Bottom: Cooling Flow Through Enclosure

The “Eye” is only a phone call away.

Please give us a call at 1-800-293-PADT or reach out to me directly at manoj@padtinc.com for more information.

AMUG 2016 Recap

AMUG LogoThis was my first year attending AMUG (Additive Manufactures User Group) and after attending RAPID last year in Long Beach, California, it exceeded my expectations.  Everyone I ran into last year at RAPID said that I HAD to attend AMUG since I am a user of both Stratasys Polyjet and FDM technologies.  Once I found out the dates I immediately asked my supervisor if I could attend this years AMUG that was held in good old St. Louis, Missouri!  I am so glad I was able to make it to AMUG.  Every day we had the decision to pick between 18 different presentations.  Not all of the presentations were repeated each day.  We had presentations from Universities, Aerospace, Defense, Medical, Manufactures of 3D printers and many more!  I needed a clone of myself because the decisions of choosing one presentation over another was way too difficult.  Luckily there were 5 representatives from PADT at this convention and we were able to share notes.

Stratasys J750

Stratasys unveiled a new 3D printer on the first day of AMUG and it is phenomenal! It is called the Stratasys J750.  The user has the ability to print with 6 different materials at the same time choosing between 360,000 different colors!  What other 3D printer is there that you can load Digital ABS, Tango (rubber), and different colors and build with them?  NONE!  Stratasys also revamped their print heads by doubling the amount of nozzles per material which results in better layer resolution!  All print modes have finer layers resulting in better aesthetics than any other printer previous with High Quality layers at 14 microns!  By teaming up with Adobe, the user can import a CAD file into Adobe Photoshop to assign a color pattern, picture, or even a texture to their CAD file.  To say I am excited about this printer is an understatement!  I need one now!Hean J750SSYS Display

STRATASYS WORKSHOPS:

Carbon fiber soluble core workshop

In this workshop we learned how to setup a soluble core, that was printed on a Stratasys Fortus 450 MC using the SR-30 support, for a carbon fiber application.  This is a great application for the soluble support material. Turns out there are many customers using this application so that they don’t have to inventory expensive tools and can print on demand cores for their customers.

Soulable Core 2Soluable Core 1

During this presentation we learned that you will need to sand the part and then apply some sealing agent to the core/mandrel.  As for what type of sealing agent works best?  The answer is all.  They haven’t had any issues with different sealing agents from different vendors.  Several coats are needed.  When the part is building, you have the ability to setup pauses in the build so that you can add inserts or bushings to the part.  Because Aluminum dissolves in Sodium Hydroxide, you will want to use a different metal.

If this is a application that you are interested in, please email me at James.barker@padtinc.com and I will respond ASAP to you inquiries.

Injection Mold 3D Printed Inserts 

This application is a huge money and time saver as well!  In this picture the inserts were 3D printed using a Digital ABS-Like material from a Polyjet printer.  The brackets and ejector plate were printed using the FDM technology and built out of Ultem 1010.    These builds took under 3 hours to build and allow the customer to quickly inject material to prove the design using the actual material required!  A few months ago we held a seminar in Utah at 2 different locations and taught this application with a Stratasys expert.  Here is a neat video Professor Jonathan George did showing this application in use: YouTube.

Here is a video that Stratasys put out that shows their printers in use and the whole process as well.  YouTube

IM Molds

ADDITIVE MANUFACTURING at GE AVIATION

LEAP Engine Fuel Nozzle

GE’s biggest success story is their LEAP Engine Fuel Nozzles.  For each LEAP engine manufactured there are 19 fuel nozzles needed.  Instead of assembling them by hand they are now all 3D printed.  10,000 engines have been sold to date since the engine was introduced in 2012.  By 2018, GE needs to 3D print 35,000 fuel nozzles and by 2020, they have estimated that they will need a total of 100,000 nozzles.  There is a 25% weight reduction and these parts are 5 times more durable than conventional manufacturing methods.

LEAP Enginh Fuel Nozzle

T25 Temperature Sensor

This housing is an inlet temperature sensor that was the 1st 3D printed part certified by the FAA to fly inside a GE commercial jet engine! GE Aviation is retrofitting 400 GE90-94B engines that power Boeing 777’s.  These sensors are subjected to all elements so there was rigorous testing done to ensure safety.

T25 Temp Sensor

The Center for Additive Technology Advancement CATA

This facility is already open and running.  The goal is to advance Additive Manufacturing across all divisions of GE.  More information can be found here.

CATA

  XJET – NEW METAL TECHNOLOGY

XJET LogoI have been operating 3D printers going on 7 years.  I am a huge fan of Stratasys/Objet 3D Printers so I made sure to attend the presentation by XJET.

AMUG was XJET’s unveiling of their new metal technology.  XJET was formed in 2005 by the inventors of Objet/Polyjet technology.  Since 2005 they have been able to raise $170 million to help spur their new idea.  They call it Nano Particle Jetting™.  The way it works is they take a nano particle of metal and suspend it in a liquid material that is then jetted from the print heads very similar to how Polyjet printers work.  Since the metal is infused in a liquid material there isn’t any harm dealing with powdered metals which eliminates the fear of dealing with a combustible powder metal!  The parts are built in a heated chamber which evaporates the liquid material that was holding the nano particle.  Another key part to their technology is the support material which is NOT the same material as the metal!  During the presentation, Dror Danai mentioned that there is no need to remove the support material with a mechanical process.  The parts will need to be annealed to remove stresses that occur during the printing process.  While the part is being annealed the support material will be removed.  I am not sure how this is done, but it was hinted that the support dissolves or evaporates away.

XJET Machine

The print heads have 512 nozzles on each of them that can jet 18,000 droplets per second which helps achieve a layer thickness as fine as 2 Microns!!  Currently XJET has 7 machines that they are operating.  6 are in R&D and 1 is being used to print benchmarks for customers to help prove the technology.  Here is a link to their website showing how their technology works: XJET

If you would like to see this printer in person you can at RAPID which is in Orlando, Florida from May 16-19.  Here is a link to RAPID.

CONCLUSION

SSYS Ice SculptureThere are many other presentations and workshops that aren’t covered in this synopsis.  I focused on things that really excited me about the future of where this technology is headed.  If XJET technology is scalable, it can be revolutionary.  GE continues to be at the forefront of this technology and is continually pushing the limits of Additive Manufacturing.  The workshops I attended were mainly Stratasys driven because I was curious how you can make end-use production parts with their 3D printers.  Also the unveiling of the Stratasys J750 helps confirm that innovation is still taking part by one of the leaders in Additive Manufacturing in showcasing their new 3D printer that can print with 6 different materials!

All in all I had a phenomenal time at AMUG and met some very interesting people that share my same passion for 3D printing.  If you have the opportunity to go to RAPID this  year in Florida, please let me know your thoughts of it.  I have heard there are some new materials coming out from Stratasys along with new 3D printers that will be showcased.  It is amazing where 3D printers have come from, and I am anxious to see where we are headed!

If you would like to contact me with any questions then please email me at this email address:

James.Barker@padtinc.comJames

James Barker, Application Engineer

Phoenix Analysis & Design Technologies

Phoenix Business Journal: ​6 things that make the Arizona technology startup community unique

pbj-phoenix-business-journal-logoIn those documentaries on the animals of the desert, at some point they always say something like “the harsh environment shapes desert dwellers into uniquely strong and beautiful creatures.” The same is true for our tech startups. “6 things that make the Arizona technology startup community unique” takes a look at this environment and what we need to do to take advantage of it.

Phoenix Business Journal: ​What is numerical simulation? And why should I care?

pbj-phoenix-business-journal-logoNumerical simulation has been the bulk of my career for 30 years now. I love simulation. It has had a huge positive impact on product development as well as many other industries.  In “What is numerical simulation? And why should I care?” I evangelize a bit about my professional passion.

Phoenix Business Journal: ​Let’s focus on microelectronics for a bit

pbj-phoenix-business-journal-logoWhen you think about high-tech in Arizona, what comes to mind? We have it all here. However, the one tech industry that supports and enables many of the others is microelectronics. In “Let’s focus on microelectronics for a bit” we go over a few of the reasons why Microelectronics are so important to Arizona.

Technology Trends in Laser-based Metal Additive Manufacturing

amug-2
Figure 1. Concept Laser’s M2 Cusing at AMUG 2016

One of the more difficult things about being at the Additive Manufacturing Users Group (AMUG) is dealing with the fact that there is more to do than you can hope to accomplish in four and a half days. So I decided to focus on two themes: laser-based metal additive manufacturing (AM); and design & simulation for AM. In this post, I focus on the former and try to distill the trends I noticed across the laser-based metal AM system manufacturers that were present at the conference: Concept Laser, SLM, Renishaw, EOS and 3D Systems (listed here in the decreasing order of the time I spent at each supplier’s booth). While it is interesting to study how 5 different suppliers interpret the same technology and develop machines around it, it is not my objective to compare them here, but to extract common trends that most suppliers seem to be working on to push their machines to the next level. For the purposes of this post, I have picked the top-of-the-line machine that each supplier offers as an indication of the technology’s capabilities: they span a range of price points, so once again this is not meant to be a comparison.

As a point of observation, the 5 key trends I noticed turned out to be all really aspects of taking the technology from short run builds towards continuous production. This was not my intent, so I believe it is an accurate indication of what suppliers are prioritizing at this stage of the technology’s growth and see as providing key levers for differentiation.

1. Quality Monitoring

Most customers of AM machines that wish to use it for functional part production bemoan the lack of controls during manufacturing that allow them to assess the quality of a part and screen for excursionary behavior without requiring expensive post-processing inspection. Third party companies like Sigma Labs and  Stratonics have developed platform-independent solutions that can be integrated with most metal AM systems. Metal AM suppliers themselves have developed a range of in-situ monitors that were discussed in a few presentations during AMUG, and they generally fall into the following categories:

  • Input Monitors:
    • Laser: Sensors monitor laser powder as well as temperature across the different critical components in the system
    • Oxygen Level: Sensors in the build chamber as well as in sieving stations track O2 levels to ensure the flushing of air with inert Argon or Nitrogen has been effective and that there are no leaks in the system
  • Output Monitors:
    • Live video: simple but useful, this allows users to get a live video stream of the top layer as it is being built and can help detection of recoater blade damage and part interaction
    • Meltpool: Concept Laser showed how its Meltpool monitoring system can be used to develop 2D and 3D plots that can be superimposed with the 3D CAD file to identify problematic areas – the video is also on YouTube and embedded below. SLM and EOS offer similar meltpool monitoring solutions.
    • Coater consistency: Concept Laser also described a monitor that captures before and after pictures to assess the consistency of the coater thickness across the build area – and this information is fed forward to adjust subsequent coater thicknesses in an intelligent manner.

Quality monitoring systems are still in their infancy with regard to what is done with the information generated, either in terms of feed forward (active) process control or even having high confidence in using the data to validate part quality. A combination of supplier development and academic and industry R&D is ongoing to get us to the next level.

2. Powder Handling

In a previous post, I touched upon the fire and explosion risks posed by metal powder handling. To lower the bar for an operator to gain access to a metal AM machine, one of the considerations is operator safety and the associated training they would need. Suppliers are constantly trying to improve the methods by which they can minimize powder handling. For a mechanical engineer, it is intriguing to see how reactive metal powders can be moved around in inert atmospheres using different strategies. The SLM 500HL uses a screw system to move the powder around in narrow tubes that stick out of the machine and direct the material to a sieving station after which they are returned to the feed area. The Renishaw RenAM 500M on the other hand uses a pneumatically driven recirculation system powered by Argon gas that is well integrated into the machine frame. Concept Laser also offers automated powder handling on the XLine 2000R, while EOS and 3DSystems do not offer this at the moment. Figure 2 below does not do justice to the level of complexity and thought that needs to go into this.

Figure 2. Two different automated powder handling systems in use in metal AM machines

One of the limitations of automating powder handling is the ability to change materials, which is very hard to impossible to do with high enough confidence with these systems. As a result, their use is limited to cases where one machine can be dedicated to one material and efficiency gains of powder handling can be fully realized. The jury is still out on the long term performance of these systems, and I suspect this is one area that will continue to see improvements and refinements in subsequent model releases.

3. Multi-Laser Processing

In the quest for productivity improvement, one of the biggest gains comes from increasing the number and power of available lasers for manufacturing. In my previous experience with laser based systems (albeit not for this application), an additional laser can increase overall machine throughput by 50-80% (it does not double due to steps like the recoater blade movement that does not scale with the number of lasers).

The suppliers I visited at AMUG have very different approaches to this: SLM provides the widest range of customizable options for laser selection with their 500HL, which can accept either 2 or 4 lasers with power selection choices of 400W or 1000W (the 4 laser option was on display, YouTube video from the same machine in action is below) – the lasers of different powers can also be combined to have two 400W and two 1000W lasers. Concept Laser’s XLine 2000R allows for either 1 or 2 1000W lasers and their smaller, M2 machine that was showcased at AMUG has options for 1 or 2 lasers, with power selection of 200W or 400W. EOS, Renishaw and 3D Systems presently offer only single laser solutions: the EOS M 400 has one 1000W laser, Renishaw’s RenAM 500M has one 500W laser and the ProX DMP 320 from 3D Systems has one 500W laser.

There are a few considerations to be aware of when assessing a multi-laser machine: Each laser drives an increase in machine capital cost. But there is another point of note to remember when using multi-laser systems for manufacturing that centers around matching process outputs from different lasers: laser-to-laser variation can be a dominant source of overall process variation and can drive a need to calibrate, maintain and control both lasers as if they were independent machine systems. Additionally, development of  a process on one particular laser power (100W, 400W, 500W, 1000W) may not scale easily to another and is something to remember when developing a long term strategy for metal AM that involves different kinds of machines, even if from the same supplier.

4. Software Integration

Renishaw spent a significant amount of time talking about their easy-to-use QuantAM software which is designed to integrate Renishaw process parameters and part processing information more tightly and allow for seamless process parameter development without needing third part software like Magics. Additive Industries announced in their presentation at AMUG that they had just signed an agreement with 3DSIM to integrate their support design software solution into their MetalFab1 machine. Software integration is likely to be an increasing trend especially around the following areas:

  • Improving support design methods and reducing its empirical nature and reducing the material, build time and support removal costs associated with them as well as eliminating the need for iterative builds
  • Increasing process options available to the user (for example for the outer skin vs the inner core, or for thick vs thin walls)
  • Simplifying the development of optimized process parameters for the user working on new materials
  • Integrating design and process optimization to increase effective part performance

In a future blog post, I will look specifically at the many design and simulation tools available around AM and how they are connected today even if not well-synergized.

5. Modular System Architectures

In a list of mostly evolutionary changes, this is the one area that struck me as being a step-change in how this technology will make an impact, even if it will be felt only by larger scale manufacturers. Concept Laser and Additive Industries are two companies that delivered presentations discussing how they were approaching the challenge of revolutionizing the technology for true production and minimizing the need for human touch. Common to both is the notion of modularity, allowing for stacking of printing, powder removal, heat treating and other stations. While Additive Industries are developing a flow resembling a series production line, Concept Laser have taken the more radical approach of having autonomous vehicles delivering the powder bed to the different stations, with travel channels for the vehicles, for the operator and for maintenance access (Figure 3). Both companies expect to have solutions out by the end of this year.

Figure 3. Concept Laser’s “Factory of Tomorrow” features swim-lanes for operators and for autonomous vehicles that will deliver powder and parts from one module to another

Concluding Thoughts

It is an interesting time to be a manufacturer of laser-based metal 3D printers, and an even more interesting time to be a consumer of this technology. The laser-material interaction fundamentals of the process are now fairly well-established. Competitors abound both in existing and emerging markets with machines that share many of the same capabilities. Alternative technologies (E-Beam melting, deposition and jetting) are making strides and may start to play in some applications currently dominated by laser-based technologies. A post early-adopter chasm may be around the corner. This will continuously drive the intense need to innovate and differentiate, and possibly also lead to a merger or two. And while most of the news coming out of conferences is justifiably centered around new process technologies (as was the case with Carbon’s CLIP and XJET’s metal nanoparticle jetting at AMUG this year), I think there is an interesting story developing in laser-based powder bed fusion and can’t wait to see what AMUG 2017 looks like!

Phoenix Business Journal: Why you should learn to shut up and listen

pbj-phoenix-business-journal-logoShut up and listen. Easy to say, hard to do. every day in a ton of different ways, we are asked to listen to what other people are saying, and the reality is that not a lot of us do.  In this post, “Why you should learn to shut up and listen” I go over why the problem causes real issues in business, and some suggestions on being a better listener.

Helpful New Meshing Feature in ANSYS Mechanical 17.0 – Nonlinear Mechanical Shape Checking

ansys=new-mesh-r17Meshing for Nonlinear Structural Problems

Overcoming convergence difficulties in nonlinear structural problems can be a challenge. I’ve written a couple of times previously about tools that can help us overcome those difficulties:

I’m pleased to announce a new tool in the ANSYS Mechanical tool belt in version 17.0.
With version 17.0 of ANSYS we get a new meshing option for structural simulations: Nonlinear Mechanical Shape Checking. This option has been added to the previously available Standard Mechanical Shape Checking and Aggressive Mechanical Shape Checking. For a nonlinear solution in which elements can become significantly distorted, if we start with better-shaped elements they can undergo larger deformations without encountering errors in element formulation we may encounter fewer difficulties as the nodes deflect and the elements become distorted. The nonlinear mechanical setting is more restrictive on the element shapes than the other two settings.

We’ve been recommending the aggressive mechanical setting for nonlinear solutions for quite a while. The new nonlinear mechanical setting is looking even better. Anecdotally, I have one highly nonlinear customer model that reached 95% of the applied load before a convergence failure in version 16.2. That was with the aggressive mechanical shape checking. With 17.0, it reached 99% simply by remeshing with the same aggressive setting and solving. That tells you that work has been going on under the hood with the ANSYS meshing and nonlinear technology. By switching to the new nonlinear mechanical shape checking and solving again, the solution now converges for the full 100% of the applied load.
Here are some statistics using just one measure of the ‘goodness’ of our mesh, element quality. You can read about the definition of element quality in the ANSYS Help, but in summary better shaped elements have a quality value close to 1.0, while poorly shaped elements have a value closer to zero. The following stats are for tetrahedral meshes of a simple turbomachinery blade/rotor sector model (this is not a real part, just something made up) comparing two of the options for element shape checking. The table shows that the new nonlinear mechanical setting produces significantly fewer elements with a quality value of 0.5 or less. Keep in mind this is just one way to look at element quality – other methods or a different cutoff might put things in a somewhat different perspective. However, we can conclude that the Nonlinear Mechanical setting is giving us fewer ‘lower quality’ elements in this case.

Shape Checking Setting Total Elements Elements w/Quality <0.5 % of elements w/Quality <0.5
Aggressive Mechanical 31683 1831 5.8
Nonlinear Mechanical 31865 1249 3.9

Here are images of a portion of the two meshes mentioned above. This is the mesh with the Aggressive Mechanical Shape Checking option set:ansys-new-meshing-17-01
The eyeball test on these two meshes confirms fewer elements at the lower quality contour levels.

And this is the mesh with the Nonlinear Mechanical Shape Checking option set:

ansys-new-meshing-17-02

So, if you are running nonlinear structural models, we urge you to test out the new Nonlinear Mechanical mesh setting. Since it is more restrictive on element shapes, you may see longer meshing times or encounter some difficulties in meshing complex geometry. You may see a benefit in easier to converge nonlinear solutions, however. Give it a try!

Press Release: 3D Printing Expertise from PADT Advances Aerospace Industry

ula-rocket-duct-made-from-3d-printed-partsMany of you may have seen the recent launch of an Atlas V rocket from United Launch Alliance (ULA).  We are honored to have lent our expertise to ULA’s 3D Printing efforts that resulted in the use of parts on that rocket made with additive manufacturing.   We will be talking about that and other ways we help the Aerospace Industry at the 32nd Space Symposium this week in Colorado Springs Colorado.  Please stop by!

Read more in the press release.  A PDF can be found here.

Press Release:

3D Printing Expertise from PADT Advances Aerospace Industry

Product design and development leader provides additive manufacturing support for United Launch Alliance Atlas V rocket

COLORADO SPRINGS, Colo.April 11, 2016PRLog — Phoenix Analysis & Design Technologies Inc. (PADT), the Southwest’s largest provider of Numerical Simulation, Product Development, and 3D Printing services and products, is highlighting its expertise this week at the 32nd Space Symposium,  the premier global, commercial, civil, military and emergent space conference.

During the symposium, PADT experts in additive manufacturing will be on hand to discuss the company’s technical expertise, logistics, sales and service capabilities in the exciting aerospace sector, which contributed to the successful launch on March 22 of a United Launch Alliance (ULA) Atlas V rocket. The Atlas V rocket made use of lightweight thermoplastic 3D printed parts, with the application of Stratasys technology supplied by PADT and consulting from PADT on how best to apply that technology to engineering, tooling, and production.

Stop by and visit PADT’s booth 1310 at the 32nd Space Symposium, April 11-14, in Colorado Springs, Colorado. http://www.spacesymposium.org/.

“PADT continues to be both a great supplier of both polymer and metal additive manufacturing technologies and an additive manufacturing technical consultant to ULA, supporting our Atlas V, Delta IV and future Vulcan Centaur launch vehicles,” said Greg Arend, ULA manager, Additive Manufacturing. “By consulting with PADT, we were able to understand how these technologies enhance our design and manufacturing process, saving time, money and weight. PADT’s knowledge of the use of both polymer and metal materials was instrumental in helping us achieve our success.”

In addition to supplying ULA with Stratasys’ polymer 3D Printing machines, PADT consulted with them early on andled a tour of Oakridge National Labs to help them understand the state of the art for both metal and polymer applications and produced a technological roadmap for both technologies that has largely been followed.  Assisted by PADT, both companies made use of additive manufacturing for engineering prototypes, then advanced to the production of tooling for manufacturing and developed the confidence needed to move to flight hardware.

The founders of PADT have been involved with additive manufacturing since the late 1980’s and the company was the first service provider in the Southwest in 1994.  Over the years, PADT has built a reputation for technical excellence and a deep understanding of how to apply various 3D printing technologies to enable real world applications.  Their sales team has shown the ability to sell sophisticated engineering products to companies large and small, and to provide excellent support to their customers.

“3D Printing is not just about makers, nor is it just about engineering prototypes,” said Rey Chu, co-owner, principal and director of Manufacturing Technologies at PADT. “Every day users are creating production hardware to produce usable parts that save them time and money. Ducts for rockets are a perfect application of 3D printed parts because they are complex, low volume, and can make single parts that need to be made in multiple pieces using traditional methods.”

About Phoenix Analysis and Design Technologies

Phoenix Analysis and Design Technologies, Inc. (PADT) is an engineering product and services company that focuses on helping customers who develop physical products by providing Numerical Simulation, Product Development, and Rapid Prototyping 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 80 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, and Murray, Utah, as well as through staff members located around the country. More information on PADT can be found at http://www.PADTINC.com

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Phoenix Business Journal: ​So, you have an idea for a product, what next?

pbj-phoenix-business-journal-logoGetting a product from idea to the market is a lot of work. Much effort and attention is focused on figuring out the idea, but the part after that is usually portrayed as some romantic quest involving coffee, colocation spaces, and long hours.  In this article,​ “So, you have an idea for a product, what next?” we offer up some practical advice on the steps you need to take to get going.