焦散(数学)
强度因子
各向同性
材料科学
强度(物理)
剪切(地质)
剪应力
光学
光强度
聚甲基丙烯酸甲酯
压力(语言学)
复合材料
断裂力学
物理
聚合物
哲学
语言学
数学物理
作者
Liyun Yang,Huanning Hu,Ye Song,Yuh J. Chao
出处
期刊:Applied Optics
[Optica Publishing Group]
日期:2020-10-15
卷期号:59 (32): 10168-10168
被引量:1
摘要
The caustic method has proven to be a useful optical method to determine stress intensity factors. This paper evaluates the stress intensity factors of a sharp V-notch under pure shear loading by the caustic method for isotropic materials. The elastic stress fields and caustics formation near the V-notch tip under pure shear loading are first introduced. The theoretical relationship between the stress intensity factor of the sharp V-notch and the characteristic length is derived. Then, the experiment on the V-notched polymethyl methacrylate specimens under pure shear loading is carried out to obtain the stress intensity factor with the derived caustic formulation. Finally, the present results obtained from caustics are compared to the results available in the literature. The good accuracy of the results obtained demonstrates the ability of the caustics method in the determination of the stress intensity factor of a sharp V-notch.
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