[case] CohesiveZoneModeI

The cohesive zone delamination model for mode I fracture introduced herein follows a bilinear traction-separation law which is characterized by four basic parameters: the initial normal and shear stiffness \(K_n\), \(K_s\), the fracture toughness \(G_c\) (also referred to as critical energy release rate), and the peak tensile normal traction \(t_{n,p}\).

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Used in no end-to-end test cases.