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Hyperelastic material with contact – looking for the best approach

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Dear Creo simulate users.

 

I would like to simulate one structure touching another structure. Once the contact happens the rubber part is deformed at the same time that the shaft bends.

I would be interested not only in the stiffness of the structure but also the stress in the parts.

 

  

 

 

 

 

 

The main problem is that even using ½ of the model (and using mirror constrains) this type of simulation still would take several hours even with not much elemnts (ex.10000) – Maybe Simuklate simply does not use all CPUs in this case, I don´t know.

 

Thus a much more interesting approach is to run a 2D simulation.  It is order of magnitude faster. Unfortunately I do not have too much experience in 2D. I tried it with another cases/assemblies and the result seems consistent.  However I don´t see the right way to setup this model in 2D.

 

For example I tried 2D axisymmetric model (using ¼ of the model) but the result seems simply wrong. For example the shaft shows an odd distribution of stress and the bending of the shaft (displacement) does not match what I would get with the full 3D model (shaft only) using the same input force.


 

 

I would be glad if someone could give me good hint in how to have quick and reliable results for this case.

 

I´ll post the CAD model latter

 

Thank you in advance

 

R. Rabe


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