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Damage modeling in ABAQUS 6.9 in surface based cohesive behavior
I am working on shear failure of sandwich composites.I have modelled a sandwich composite with surface based cohesive behavior in ABAQUS 6.9.Now i have to do damage modelling. For damage initiation i have to describe values of 'peak values of contact stress' or 'peak values of contact separation'.In addn i also have to describe values of 'critical fracture energy' for damage evolution. I don't know how to find these values or where from i will get these values. I anyone is working or has worked on these aspects the pl help me.
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