Dear all,
I am working on simulation of Ductile damage in ABAQUS using Johnson cook failure model. In ABAQUS, Damage evolution is based on Displacement at failure which itself is depending on Characteristic length and Difference in Plastic strain values.
My question is, Upon using a two different mesh, coarse and fine, My evolution is different. This makes me doubt the physical meaning of this input Displacement at failure.
From my understanding, changing the mesh fine to very fine, should not affect my damage evolution. Can someone please guide me in understanding what I am understanding wrong here?
Hi Dhanraj Rajaraman. It can affect the results if the mesh is not converged. I suggest you check if that is the here.
Thank you everyone for the answers. It was all indeed helpful but actually, the question was, How to make the damage evolution independent of characteristic length?
From my understanding, changing the mesh fine to very fine, should not affect my damage evolution. Can someone explain me how can it be physical to have a mesh dependent characteristic length in the equation of Displacement at failure in ABAQUS?
sincere thanks and regards
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