Nonlinear Mechanical Physics Preference

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  • Last Post 20 November 2018
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joepa_2017 posted this 20 November 2018

I have a question regarding the proper use of the nonlinear mechanical physics preference in Workbench 19.1. Let's say I have a thin film on a substrate that I am analyzing. If the thin film is a linear elastic solid, and the substrate is a nonlinear elastic solid (hyperelastic), can I mesh the entire model using the nonlinear mechanical physics preference? Will that still accurately capture the behavior of the linear elastic material, or can nonlinear mechanical physics preference only be used for nonlinear materials?

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SandeepMedikonda posted this 20 November 2018

Yes, You can just use Nonlinear Mechanical. This basically just changes the default mesh settings a bit. See here.

I recommend it your case because the initial mesh will be similar for both parts, by capturing curvature etc.

Regards,
Sandeep

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peteroznewman posted this 20 November 2018

The meshing preference can be set for nonlinear and be perfectly acceptable for linear materials. It just makes better shaped (and more) elements than would be required if this was a strictly linear model.

Regards,
Peter

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