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How to define contact between newly generated surfaces after fracture?

How to define contact between newly generated surfaces after fracture?

How to define contact between newly generated surfaces after fracture?

(OP)
Hi group

I am trying to define a normal contact behavior between new born surfaces after fracture. I considered a tensile test specimen and simulated its fracture during tensile test in explicit. After fracture two new surfaces are born. I am interested to define contact between them, so I can simulate their interaction. I define a normal contact interaction using general contact (explicit) and All*self contact domain hoping that the new born surfaces will be recognized as exterior surfaces when failure happens, so that i can compress two pieces together and study their deformation. But it seems that there is no contact defined since two surfaces simply penetrate into each other when I press them together. Has anybody tried to establish contact between surfaces that are created after fracture?

Thanks for your time.
Mostaani

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