How to get mode II GIIc value from mode I GIc value for Abaqus FEA of FRP part using CZM?

12 December 2017 0 3K Report

Hello everyone,

I am making a finite element analysis of a part using cohesive zone model (CZM) in Abaqus. Unfortunatly, I just have the mode I strain energy release GIc but not the mode II energy release GIIc. I have seen in one video on youtube that it is possible to assume the mode II strain energy release GIIc to be equal to two times GIc. I know The Benzeggagh-Kenane criterion in Abaqus which assumes the same fracture energy in mode II and mode III. But I don't know if there is a law to justify the assumption that GIIc=2*GIc in a paper. Can anyone help me?

Thanks

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