Francesca,
I have a doubt regarding the cohesive zone model that I can't solve and I hope
that someone can help me.
I read that the so-called separation "delta" represents the separation between
the two surfaces of the crack. The traction separation law links the traction
force in the fracture process zone with this separation.
Considering for example a bilinear traction separation law. Whent the traction
is greater than zero, the separation is greater than zero. Does it mean that
the crack surface begins to separate? It seems that the fracture process is
modelled as a gradual process, with the separation between crack surface
monotonicallt increasing untile the final separation is reached (and the crack
grows).
I think you need to provide more context to your question. You assume that
everyone knows what the "cohesive zone model" is you are referencing, but we
don't. As a consequence, much of the rest of your question is likely not going
to make much sense to most on this mailing list either.
Best
W.
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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