I'm new here, so I should briefly introduce myself. I'm a French student working as an intern in a valve manufacturing society. Currently I'm working on the modelling of rubber components using Ansys Workbench v14.
I'm having troubles to model rubber behaviour. If someone has experience in modelling hyper-elastic materials with Ansys Workbench I would be glad to get some advice about it. For instance, how to set correctly the mesh parameters (I'm quiet sure it's the origin of my problem). Or shouldn't I use an explicit solver instead of using the mechanical APDL implicit solver ?
I'm a beginner on this topic so any piece of advice would be great for me.
I try to simulate a simple model : the slipping of a metal piece on a rubber strip (frictionless model).
I should precise that the rubber I study is considered as incompressible
I perform a structural analysis in which there are two load steps :
1 - The metal piece pushes on the rubber strip (normal displacement introducing a penetration)
2 - The metal piece slips on the rubber strip.
In the mesh parameters I set physical preferences to "explicit"
In the shape checking, I tried "explicit" and "Aggressive Mechanical" but both settings lead to an unconverged solution.
Here is my mesh :
the green part is the elastomer and the grey part is the metal piece.
you can see the complete parameters below (sorry it's in french, but I think many words are quiet similar to english)
For the contacts settings I chose frictionless and I let the default parameters of Ansys.
I apply a displacement of 1mm on the upper face of the metal piece, and then in the second load step I translate this same piece with a displacement of 10mm.
On the link below you will see my boundary conditions
Finally here is a short video presenting an unconverged solution :
Thank you in advance, it would be really nice to discuss about it with one of you.