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Large deformation Visco elastic simulation of polymer

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Joined: 1 year ago
  • I trying to do a simulation in which two polymers side by side (with a gap) are compressed between two glasses. So, the prony series is for the simple linear elastic right . can I still use the prony series for the large deformation simulations. 
  • Also I am experiencing element distortions while simulation in Ansys, I have tried changing sub steps to 100, tried mixed UP formulation, tried uniform reduced integration, but still experiencing high element distortions, can any one suggest me a a solution for this.
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Posts: 19
Joined: 2 years ago

1. Yes, you can use a linear elastic material model (Prony series) at large deformations.

2. I would try full integration (not reduced integration). Sometime reduced integration can cause hourglassing.