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所属单位：航空学院

发表刊物：Mathematics and Mechanics of Solids

关键字：Crack-inclusion interaction plastic zone size crack tip opening displacement multiple cracks

摘要：In this paper, the interaction among two Zener-Stroh cracks (with plastic zone correction) and a nearby circular inclusion are investigated. To evaluate the plastic zone sizes at crack tips in the current physical problem is a great challenge. As the first attempt to explore the multiple defects' interaction effect on the yielding behavior of a crack, we focused on the analysis of one target crack, while the other crack and the circular inhomogeneity are treated as influence factors. With the help of coordinate transformation and superposition procedure, the formulated singular integral equations can be solved numerically. The influence of material properties, crack-crack positions and other parameters, such as crack length and Burgers vector of the Zener-Stroh crack, on the target crack tip stress intensity factor, plastic zone size and crack tip opening displacement are examined. It is found that the effects of the aforesaid parameters on the cracks are all inter-related and dependent on each other. This observation reveals the complexity of fracture analysis and the necessity to have a deep research on interacting defects in composite materials.

备注：卷: 24 期: 3 页: 542-558

ISSN号：1081-2865

是否译文：否

发表时间：2019-03-01