Five Advanced Simulation Features You Need Right Now

Written By: Mike Gayette
  • 9/14/2018
Motorcycle wheel in simulation study

 Early simulation is the key to making changes while still in the design and prototyping phases, so you can avoid spending budget on failed prototypes or excessive error chasing later in development.

Creo Simulate works for most applications, but not all. If what you want is state-of-the-art, nonlinear stress testing while keeping the familiar Simulate interface, then the Creo Advanced Simulation Extension is for you.

Here are five reasons why.

Version: Creo 5.0

Extension: Creo Advanced Simulation

Automatic Meshing

The Creo Advanced Simulation Extension AutoGEM menu has several commands to natively work with meshing. It can even help you determine if the mesh will be successful before you ever run a full analysis.

Initially, AutoGem creates the mesh elements for later use in calculating displacement, reaction, stresses, thermal fluxes, and temperatures. To use these elements during analysis, find the Use element from existing mesh file option in the Run Settings dialog box. If you don’t want to use the AutoGEM elements, use the same dialog box and choose Create elements during run.

 Use Creo 5.0 to automesh models for simulation

User-defined Output Measure for Quality

Continuing with meshing, this feature is a bit like binary code in the way it informs you about the quality of a given interface. Is the current mesh acceptable? If it is, you’ll see a quality index of 1. If the mesh is poor, a zero. Anywhere in between might signal an opportunity for improvement.

To see it, start in Structure Mode, then click Home > Run > Measures. In that dialog box, choose New. In the Measure Definition dialog box, under Quality, choose Interface and Quality Index.

If improvement is needed, you can refine the mesh with the appropriate AutoGEM controls, or you can use a mapped mesh instead. Watch the effects of these choices in our demonstration video.

User-defined Level of Contact UI

This feature opens up options for tuning your contact models closer to realistic reactions. All contact interfaces are supported: None, Infinite, and Finite.

To see what’s available, first go to Structure Mode. Then click Refine Model > Connections > Interface. Under here you’ll see an Interface Definition dialog box. Go to Type and change the setting to Contact.

This overrides the engine default model-level guidelines for maximum penetration by the solver, and instead uses your specification. Pay attention to any convergence issues while using this setting.

Detailed Stresses

In the same interface window, keep the selection as Contact. This time, in the Friction box, select Finite. (This particular setting only works for finite friction interfaces.)

Like the previous Contact UI setting, it overrides the default global model and analysis-level detailed stresses. When you make this selection, you improve the quality of stress test results on the given interface. Keep in mind that using this on multiple interfaces likely extends analysis runtimes.  

Let’s say you want to print a new part. Before running the job, you can adjust support structures to check the stresses and optimize their positioning. See how that works here:

Solver Accuracy Settings

The analysis accuracy you want changes as you move through a project. At the beginning, quicker, less accurate checks are fine. Make major adjustments and move on. Later, you want higher accuracy levels for analysis, and you’re willing to wait for them. The overall direction of the project is set, and those finishing refinements make a big impact on downstream results.

In the Creo Advanced Simulation Extension, you can choose the level of solver accuracy to fit the stage of your project. Small Deformation Analysis allows for Medium and High, while large deformation analysis allows Low, Medium, and High.

One More Pro Tip

You can use the combination of Creo Simulate and the Creo Advanced Simulation Extension as standalone applications apart from Creo Parametric. Same familiar interface with a smaller footprint!

Find out more about what Creo can do. Download the 30-day free Creo trial now!

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About the Author

Mike Gayette

Mike Gayette is a marketing professional and freelance writer based in North Dakota. He writes about engineering software, marketing technology, customer service, and team building. He also spends time at the local humane society as a dog walker and cat entertainer.