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Effect of virtual crack size on the crack deflection criterion at a bi-material interface under wedge loading. (English) Zbl 1258.74088

Summary: The deflection criterion of an interface crack under wedge loading was investigated in terms of the ratio of the energy release rate of a deflected crack \((G_{d})\) to that of a penetrated crack \((G_{p})\), and the virtual crack size \((a)\) was normalized in terms of the length from the interface to the loading point \((L)\). \(a/L\) of approximately \(0.001-0.05\) is required for the deflection criterion \((G_{d}/G_{p})\) to be converged for the composites with Dunders’ parameter \(\alpha \) between \(-0.6\) and \(0.6\).

MSC:

74G75 Inverse problems in equilibrium solid mechanics
74R10 Brittle fracture
74S05 Finite element methods applied to problems in solid mechanics
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