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Viscoplasticity: stationary and transient modeling
Posted 7 août 2013, 12:49 UTC−4 Materials, Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers, Structural Mechanics Version 4.3b 1 Reply
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I am trying to work on a model that has both viscoplasticity (Anand model from the Nonlinear Structural Materials Module) and contact. First, it seems like I'm having penetration. A stationary parametric model seems to be more appropriate to model contact. However, when I try to run it with viscoplasticity, there is an error that states:
"There are xx void equations for the variable mod1.solid.ece..." This variable is called effective creep strain. Do I need to have initial stress/strain in order to run it? How do I implement it?
Or, is it better to insist on the transient study and work on solving the contact issues?
Any thoughts are greatly appreciated!
Thank you!
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See my response on the “Impact of 2 Spheres” discussion thread: www.comsol.com/community/forums/general/thread/30262/