hi everyone,
i'm modelling the impact on the composite carbon/epoxy using Abaqus 6.9.
i have the questions:
when i use damage evolution for hashin damage criteria, i need the values of the fracture energy: longitudinal tensile fracture energy, longitudinal compressive frecture energy, transverse tensile fracture energy, transverse compressive fracture energy. i'm suggested to use the values as 12500, 12500,2500,2500. Are these correct? i dont know how to evaluate these values. Is there any suggestions?
wait for reponse.
regard :d
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