一种求解复合型裂纹应力强度因子的组合方法

Combined Method for solving Stress Intensity Factors of Mixed-Mode Crack

用焦散线法与图象全息光弹法相结合,可有效提高求解复合型裂纹应力强度因子的精度,叙述了此组合方法的原理、方法与技术,用此法研究了工程中所关心的折裂纹问题。实验表明,用相应的斜裂纹来代替计算其应力强度因子是适当的。

By means of caustic method combined with image holo-photoelasticity method,the accuracy of Stress Intensity Factors(SIFs) of mixed-mode crack is efficaciously improved.This paper describes the principles,procedures and technique of this combined method.With this method,the problems of kinked cracks concerned in engineering are investigated.Expritnetital results show that it is proper to replace the kinked crack with its corresponding;inclined crack for caleulating its SIFs