论文部分内容阅读
1.问题的提出 层板脱层是复合材料主要破坏模式之一;Wang等人认为基本上是断裂问题。一般均假定复合材料层板脱层开裂是基体控制的,在复合型开裂作用下的能量释放率G为各个单一型开裂作用下的能量释放率G_Ⅰ、G_Ⅱ和G_Ⅲ的代数和 G=G_Ⅰ+G_Ⅱ+G_Ⅲ (1)从下列的研究结果可看出上式有一定的不合理性。
1. Proposed Issues Layered delamination is one of the major failure modes of composites; Wang et al. Concludes that it is basically a fracture problem. In general, it is assumed that the delamination cracking of composite laminates is controlled by the matrix. The energy release rate G under the combined cracking is the algebra of energy release rate G_Ⅰ, G_Ⅱ and G_Ⅲ and the ratio of G = G_Ⅰ + G_Ⅱ + G_III (1) From the following findings we can see that the above formula has some irrationality.