Hi there,

I am working on a component made of steel and rubber.

At the inetrface between the two the strain gradient in the rubber is very significant.

The solution detail of interest is exactly the maximum strain at the interface, which I have tried to hunt down refining my mesh and checking the sensitivity.

The fact is that strains keep increasing, up to values in the region of 300%, at a point were my mesh is well too fine.

It made me think about modelling the detail.

In the presence of a singularity in a metallic component would just represent a warning on the appereance of a plastic zone, but with polymers?

Are those strain realistic or simply a product of the mathematical singularity? Do not the viscoelastic dissipation at such point start to represent a feature which cannot be neglected any more?

The same would happen modelling a crack. Using singular elements n ANSYS if needed even the singularity could be represented, but what is the meaning in a material which does not undergo plastic deformation? Is it a call for considering how relaxation will make the crack tip more and more blunt?

Thank you very much for any help

Muzialis