焦散线法应用的进一步研究及K_Ⅱ测定  

Method of caustics for 3D engineering problems

作　　者：姚建初[1] 

机构地区：[1]华中科技大学机械科学与工程学院

出　　处：《华中科技大学学报（自然科学版）》2002年第6期4-6,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

摘　　要：结合Ⅱ型裂纹厚试样的焦散线图像分析及KⅡ 的测定 ,提出了的焦散线法与三维广弹应力冻结技术相结合的方法 ,并说明其技术难点及有关实验方案 .Combining the method of caustics and the stress ice out technique of three dimensional photo elasticity, the three dimensional cracked body problems were analyzed. The stress intensity factor K Ⅱ of the crack tips of Ⅱ thick specimen was measured. The experimental result is consistent with the theoretical one. A problems of 3D fracture is solved succcessfully. With the caustics and the stress ice out technique. The method of caustics of three dimensional problem has been extended.

关 键 词：焦散线法 断裂力学 应力解冻 Ⅱ型裂纹 应力强度因子 

分 类 号：O346.1[理学—固体力学]