论文部分内容阅读
计算了多种四点剪切Ⅱ型裂纹试件的全场应力，并同时进行了实验研究。通过对这些试件的计算结果与实验结果的比较分析，较好地揭示了这些Ⅱ型裂纹试件初裂、后继破坏以及“剪切核”的形成机理，避免了目前仅用Ⅱ型裂纹奇异应力场给分析带来的误差及局限。
The full field stresses of a variety of four-point shear type Ⅱ crack specimens were calculated, and experimental studies were carried out at the same time. By comparing the calculated results of these specimens with the experimental results, it is well revealed that the initial cracking, subsequent failure and the formation mechanism of “shear nuclei” of these Type Ⅱ specimens are avoided, Analysis of the stress field to bring the error and limitations.