raphaeldelperugia
New member
- Jun 25, 2014
- 1
Hi everyone,
I created a simple object with a hyperelastic material (rubber) with a Mooney-Rivlin law.
I encastred one of the extremities and i imposed a small pressure (traction) on the other one. But the calculs won't converge after a few steps.
I checked and, the problem is not the meshing nor the minimum time step. If instead of imposing a pressure, i impose a concentrated force or a displacement, evrerything works. It is not either the pressure that is too strong because i put a very small one. It is not the choice of the area where i impose the pressure either.
So my question is: is it normal mathematically to have a non-convergence when imposing a pressure on a hyperelastic material?
Thank you very much for your help.
Raphaël
I created a simple object with a hyperelastic material (rubber) with a Mooney-Rivlin law.
I encastred one of the extremities and i imposed a small pressure (traction) on the other one. But the calculs won't converge after a few steps.
I checked and, the problem is not the meshing nor the minimum time step. If instead of imposing a pressure, i impose a concentrated force or a displacement, evrerything works. It is not either the pressure that is too strong because i put a very small one. It is not the choice of the area where i impose the pressure either.
So my question is: is it normal mathematically to have a non-convergence when imposing a pressure on a hyperelastic material?
Thank you very much for your help.
Raphaël