点击次数：

论文类型：会议论文

发表时间：2009-05-15

收录刊物：EI、CPCI-S、SCIE、Scopus

卷号：1

页面范围：503-506

关键字：numerical simulation; fracture saturation; fracture spacing; fracture pattern; fracture formation; spherical solid

摘要：Fracture formation on surfaces of bi-layered spherical solid is studied numerically. This work is focused on patterns and sizes of fractures and the principle of fracture saturation. We consider a spherical bi-layered solid as an example of fracture formation pattern due to expansion of one material layer with respect to another. As a result of this expansion, it stretches until it reaches its limit of deformation and cracks. A novel numerical code, 3D Realistic Failure Process Analysis system (abbreviated as RFPA3D) is engaged to obtain numerical solutions. The different patterns are obtained by varying the thickness of the material layer. The simulating investigation shows that the stresses exceed the outer layer material's threshold stress, which leads to fracture formation. As this process continues, a pattern of fractures develops. The corollary is that pattern formation and fracture saturation may be understood, or predicted, at some level without a complete understanding of the physical details.