A conceptually simple, mixed-mode dependent cohesive zone model (MDG_c CZM) is described. The application of this model is illustrated by analyzing an edge-cracked elastic layer that is sandwiched between rigid adherends. Various combinations of edge-normal and edge-tangential displacements were applied to the elastic layer to generate a wide range of applied mode-mixity. The calculated effective toughness versus applied mode-mixity relationship displays a strong dependence on mode-mixity with the effective toughness increasing rapidly with the magnitude of the mode-mixity. The calculated relationship also displays a pronounced asymmetry with respect to the applied mode-mixity. This dependence is similar to that observed experimentally, and calculated results are in good agreement with published data for a glass/epoxy interface that was generated using a test specimen of the same type as analyzed here.
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