Introducing the 2019 Tucson ANSYS User Conference

PADT is excited to announce the agenda for our 2019 Tucson ANSYS User Conference. This single day event brings together ANSYS users, partners, and industry experts for networking, learning, and sharing of innovative ideas.

Join us after work at Brother John’s BBQ from 5:00 pm – 8:00 pm to explore the role ANSYS simulation plays right here in Tucson Arizona.

This free event will feature PADT’s Simulation Support Manager discussing ANSYS offerings in the realm of additive manufacturing, as well as talks from the founders of Tucson based companies, such as:

Food and drink will be provided.

Check out the full agenda below for more information on the presenters & their talks:

Don’t miss this unique opportunity to connect with other ANSYS users who call the city of Tucson Arizona their home. Secure your spot today.

We look forward to seeing you there!

All Things ANSYS 028 – A Year in Review: Predictions for ANSYS in 2019

 

Published on: January 7th, 2019
With: Eric Miller, Joe Woodward, & Ted Harris
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Simulation Support Manager Ted Harris, and Specialist Mechanical Engineer Joe Woodward, for a discussion on their predictions for ANSYS in 2019, and a look back at our predictions from 2018.

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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All Things ANSYS 027 – 2018 Wrap-up – Our Favorite ANSYS Features From This Year

 

Published on: December 17th, 2018
With: Eric Miller, Tom Chadwick, Joe Woodward, & Ahmed Fayad
Description:  

 

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Simulation Support Team, including Tom Chadwick, Joe Woodward, and Ahmed Fayad for a round-table discussion of their favorite ANSYS features released in 2018, along with news regarding the PADT and ANSYS worlds.

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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How to Use Lattice Optimization in ANSYS Mechanical and ANSYS SpaceClaim 19.2

One of the great new features in ANSYS Mechanical 19.2 is the ability to perform a lattice optimization.  Accomplished as an option within Topology Optimization, lattice optimization allows us to generate a lattice structure within our region of interest.  It includes varying thickness of the lattice members as part of the optimization.

Lattice structures can be very beneficial because weight can be substantially reduced compared to solid parts made using traditional manufacturing methods.  Further, recent advances in additive manufacturing enable the creation of lattice structures in ways that weren’t possible with traditional manufacturing.

Here I’ll explain how to perform a lattice optimization in ANSYS 19.2 step by step.

The procedure starts the same as a normal topology optimization in ANSYS Mechanical, with an initial static structural analysis on our original part or assembly.  If you’re not familiar with the process, this earlier PADT Focus blog should be helpful:  http://www.padtinc.com/blog/the-focus/topological-optimization-in-ansys-18-1-motorcycle-component-example

For the lattice optimization, I’m starting with a part I created that acts as a corner brace:

At this early point in the simulation, the Project Schematic looks like this:

I used the Multizone mesh method to get a hex mesh on the part:

Simple loads and constraints are recommended especially if you’ll be doing a downstream validation study.  That is because the downstream simulation on the resulting lattice geometry will most likely need to operate on the FE entities rather than geometric entities for load and constraint application. The boundary conditions in this simple model consisted of a fixed support on one side of the brace and a force load on the other side:

After solving, I reviewed the displacement as well as the stress results:

Satisfied with the results, the next step is to add a Topology Optimization block in the Project Schematic. The easiest way to do this is to right click on the Solution cell, then select Transfer Data to New > Topology Optimization:

You may need to re-solve the static structural simulation at this point.  You’ll know if you have yellow thunderbolts in the Project Schematic instead of green checkmarks for the Static Structural analysis. 

At this point, the Project Schematic now looks like this:

The Mechanical window now has the Topology Optimization branch added:

The change to make to enable a lattice optimization is accomplished in the details view of the Optimization Region branch:

We then need to specify some settings for the lattice.  The first of these is the Lattice Type.  The various types are documented in the ANSYS 19.2 Help.  In my example I selected the Crossed option.

The other properties to define are:

  • Minimum Density (to avoid lattice structures that are toothin.  Allowed bounds are 0 and 1)
  • Maximum Density (elements are considered full/solid fordensities higher than this value, allowed bounds are 0 and 1)
  • Lattice Cell Size (used in downstream geometry steps andadditive manufacturing)

Values I used in my example are shown here:

Assuming no other options need to be set, we solve the lattice optimization and review the results.  The results are displayed as a contour plot with values between zero and one, with values corresponding to the density settings as specified above.

Note that at this stage we don’t actually visualize the lattice structure – just a contour plot of where the lattice can be in the structure.  Where density values are higher than the maximum density specified, the geometry will end up being solid.  The lattice structure can exist where the results are between the minimum and maximum density values specified, with a varying thickness of lattice members corresponding to higher and lower densities.

The next step is to bring the lattice density information into SpaceClaim and generate actual lattice geometry.  This is done by adding a free standing Geometry block in the Workbench Project Schematic.

The next step is to drag and drop the Results cell from the Topology Optimization block onto the Geometry cell of the new free standing Geometry block:

The Project Schematic will now look like this:

Notice the Results cell in the Topology Optimization branch now has a yellow lightning bolt.  The next step is to right click on that Results cell and Update.  The Project Schematic will now look like this:

Before we can open SpaceClaim, we next need to right click on the Geometry cell in the downstream Geometry block and Update that as well:

After both Updates, the Project Schematic will now look like this:

The next step is to double click or right click on the now-updated Geometry cell to open SpaceClaim.  Note that both the original geometry and a faceted version of the geometry will exist in SpaceClaim:

It may seem counter intuitive, but we actually suppress the faceted geometry and only work with the original, solid geometry for the faceted process.  The faceted geometry should be automatically suppressed, as shown by the null symbol, ø, in the SpaceClaim tree.  At this point it will be helpful to hide the faceted geometry by unchecking its box in the tree:

Next we’ll utilize some capability in the Facets menu in SpaceClaim to create the lattice geometry, using the lattice distribution calculated by the lattice optimization.  Click on the Facets tab, then click on the Shell button:

Set the Infill option to be Basic:

At this point there should be a check box for “Use Density Attributes” below the word Shape.  This check box doesn’t always appear.  If it’s not there, first try clicking on the actual geometry object in the tree:

In one instance I had to go to %appdata%\Ansys and rename the v192 folder to v192.old to reset Workbench preferences and launch Workbench again.  That may have been ‘pilot error’ on my part as I was learning the process.

The next step is to check the Use density attributes box.  The Shape dropdown should be set to Lattices.  Once the Use density attributes box is checked, we can then one of the predefined lattice shapes, which will be used for downstream simulation and 3D printing.  The shape picked needs to match the lattice shape previously picked in the topology optimization.

In my case I selected the Cube Lattice with Side Diagonal Supports, which corresponds to the Crossed selection I made in the upsteam lattice optimization.  Note that a planar preview of this is displayed inside the geometry:

The next step is to click the green checkmark to have SpaceClaim create the lattice geometry based on the lattice distribution calculated by the lattice optimization:

When SpaceClaim is done with the lattice geometry generation, you should be able to see a ghosted image showing the lattice structure in the part’s interior:

Note that if you change views, etc., in SpaceClaim, you may then see the exterior surfaces of the part, but rest assured the lattice structure remains in the interior.

Your next step may need to be a validation.  To do this, we create a standalone Static Structural analysis block on the Project Schematic:

Next we drag and drop the Geometry cell from the faceted geometry block we just created onto the Geometry cell of the newly created Static Structural block:

We can now open Mechanical for the new Static Structural analysis.  Note that the geometry that comes into Mechanical in this manner will have a single face for the exterior, and a single face for the exterior. To verify that the lattice structure is actually in the geometry, I recommend creating a section plane so we can view the interior of the geometry:

To mesh the lattice structure, I’ve found that inserting a Mesh Method and setting it to the Tetrahedrons/Patch Independent option has worked for getting a reasonable mesh.  Care must be taken with element sizes or a very large mesh will be created.  My example mesh has about 500,000 nodes.  This is a section view, showing the mesh of the interior lattice structure (relatively coarse for the example).

For boundary condition application, I used Direct FE loads.  I used a lasso pick after aligned the view properly to select the nodes needed for the displacement and then the force loads, and created Named Selections for each of those nodal selections for easy load application.

Here are a couple of results plots showing a section view with the lattice in the interior (deflection followed by max principal stress):

Here is a variant on the lattice specifications, in which the variance in the thickness of the lattice members (a result of the optimization) is more evident:

Clearly, a lot more could be done with the geometry in SpaceClaim before a validation step or 3D printing.  However, hopefully this step by step guide is helpful with the basic process for performing a lattice optimization in ANSYS Mechanical and SpaceClaim 19.2.

All Things ANSYS 026 – Eigenvalue Buckling & Post-buckling Analysis in ANSYS Mechanical

 

Published on: December 3rd, 2018
With: Eric Miller & Joe Woodward
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Specialist Mechanical Engineer, Joe Woodward to discuss how eigenvalue buckling can effect the load factor of a structure, and what applications it has for a variety of different projects. All that, followed by an update on news and events in the respective worlds of ANSYS and PADT.

For more information on this topic and some visual representation of what is being discussed, check out the blog post that inspired this episode here:

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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All Things ANSYS 025 – Elevating Post Processing with ANSYS Ensight

 

Published on: November 19th, 2018
With: Eric Miller & Clinton Smith
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s CFD Team Lead Engineer and PhD, Clinton Smith to discuss what makes ANSYS Ensight so special, including the boost it gives to both post processing speed and visualization quality by implementing ANSYS Ensight. All that, followed by an update on news and events in the respective worlds of ANSYS and PADT.

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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Getting it Right the First Time: Streamlining Metal 3D Printing with ANSYS Additive Solutions

Don’t miss this informative presentation – Secure your spot today!

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).

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All Things ANSYS 024 – An Interview with TriLumina on using ANSYS to help develop LiDAR components

 

Published on: November 5th, 2018
With: Eric Miller & Jeff Earls
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by Jeff Earls of TriLumina for a discussion on how they use ANSYS simulation tools on their disruptive new design for laser arrays used in LiDAR applications, such as autonomous vehicles. All that, followed by an update on news and events in the respective worlds of ANSYS and PADT.

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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Discover What’s New in ANSYS Fluent 19.2 – Webinar

Don’t miss this informative presentation – Secure your spot today!

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).

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All Things ANSYS 023 – Exploring the Latest & Greatest in ANSYS 19.2

 

Published on: October 22nd, 2018
With: Eric Miller, Joe Woodward, Ted Harris, & Tom Chadwick
Description:  

In this episode the technical support staff at PADT returns to join your host and Co-Founder of PADT, Eric Miller for a discussion on their favorite additions in ANSYS 19.2. This conversation includes PADT’s Specialist Mechanical Engineer Joe Woodward, Simulation Support Manager Ted Harris, & Senior CFD Engineer Tom Chadwick, and is followed by an update on news and events in the respective worlds of ANSYS and PADT.

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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Meshing Enhancements in ANSYS 19.2 – Webinar

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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).

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All Things ANSYS 022 – Recap of the 2018 ANSYS Innovation Conference & Updates on ANSYS 19.2

 

Published on: October 8th, 2018
With: Eric Miller, Joseph Hanson, Maryam Khorshidi, & Dominic Kedelty
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by Joseph Hanson of Intel, and Maryam Khorshidi & Dominic Kedelty of MTD Products for a discussion on the presentations they saw at last week’s ANSYS Innovation Conference, and how their companies are leveraging simulation tools today. All that, followed by an update on news and events in the respective worlds of ANSYS and PADT.

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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Explore the Latest Advancements in Design Engineering with ANSYS 19.2 – Webinar

Don’t miss this informative presentation – Secure your spot today!

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).

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All Things ANSYS 021 – Introducing the ANSYS Innovation Conference

 

Published on: September 24th, 2018
With: Eric Miller, Arkajyoti Chang, Chris Grieve, Aaron Edwards, and Andy Bauer
Description: In this episode your host and Co-Founder of PADT, Eric Miller is joined by Arkajyoti Chang of Benchmark Electronics, Chris Grieve of Optis World, and Aaron Edwards & Andy Bauer of ANSYS Inc., for a discussion on where their companies fit into the world of simulation, focusing on applications such as autonomous vehicles, chip packaging, antenna design, and more, as well as a brief synopsis of what they will be discussing at the upcoming Arizona ANSYS Innovaiton Conference on Wednesday, October 3rd. All that, followed by an update on news and events in the respective worlds of ANSYS and PADT.

For more information on the Arizona ANSYS Innovation Conference & a link to register visit: https://www.padtinc.com/AZInnovation18.html

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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Updates and Enhancements in ANSYS Mechanical 19.2 – Webinar

Don’t miss this informative presentation – Secure your spot today!

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).

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