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[javat33489]

Hi all. Such a strange problem. I squeeze two rubbers together, along the edges of the metal plates, one is fixed, the second presses. Both plates are non-deformable bodies (two rubbers are in the center, with each other). If I set a displacement on the plate and it starts to compress the rubber, the calculation proceeds. If I set a force on the plate, then the calculation gives me a bunch of errors:

 

I tried to make any adequate contact settings, it does not help.

I am using substeps:

1000

500

10000.

[Sahil Sura]

Hi javat33489,
The warnings or the errors might be due to some of the following reasons,
Unreasonable material properties like some negative material properties or so.
Unconstrained or Overconstrained Model.
Improper definition of connections or behaviors.
Analysis Settings (You might want to try including weak springs and large deflections in the model)

Please find some of the following references which may be helpful in solving the model-
5.9. Singular Matrices (ansys.com)
Troubleshooting Workbench (ansys.com)
Topics in Hyperelasticity - ANSYS Innovation Courses
Structural Boundary Conditions - ANSYS Innovation Courses

Hope this helps!
Thanks,
Sahil
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