论文部分内容阅读
断裂力学作为研究裂纹体扩展规律的一门学科,在近年来获得了迅速发展,其中裂纹体的应力强度因子的计算乃是重要的课题之一。这一问题,通常用解析法、试验法和数值法进行求解,本文,利用了光弹性法对紧凑拉伸试样的应力强度因子进行了测试。本文探讨了试样尺寸、试样尺寸比例和切口根部曲率半径对K_I的影响。
Fracture mechanics has been developed rapidly in recent years as a discipline to study the law of crack propagation. The calculation of stress intensity factor of crack body is one of the important topics. This problem is usually solved analytically, experimentally and numerically. In this paper, the stress intensity factor of a compact tensile specimen is tested using the photoelastic method. In this paper, the effects of specimen size, specimen size ratio and root radius of curvature on K_I are discussed.