Interaction of cavities, inclusions and a crack near semi-cylindrical gap

Abstract eng:
In natural medium, engineering composite materials, earthquake engineering, it can be found that there are some gaps at the edge of the matrix, and shallow-buried cavity or inclusion structure near the gaps. When the matrix is impacted by dynamic load, defects could be found around the cavities and inclusions. In this paper, Green’s firnction method and crack division method are used to investigate the problem of dynamic stress concentration of multiple cavities, inclusions and a linear crack near semi-cylindrical gap for incident SH wave. The expressions of the displacement and stress are given, and an example is provided to show the effect of cavities, inclusions and crack on the dynamic stress concentration.

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