摘要
对于尖角裂纹,裂纹深度和裂纹尖端曲率对于裂纹附近应力场的影响有可能要大于裂纹张开角度的影响。根据弹性断裂理论和复变函数理论建立了一个计算模型,利用保角映射方法解决了尖角裂纹的边界条件问题,得到了具有不同深度和尖端曲率的裂纹周围应力分布,并对此应力分布规律进行了分析。
For sharp cracks, the influences of the crack depth and tip curvature on the stress field around the crack might be greater than those of crack opening angle. Based on the elastic fracture theory and the complex function theory, a caluculation model is developed. The condition problem of sharp crack is solved with the conformal mapping method. Stress distribution around the crack for different crack depth and tip curvature are obtained and analysed.
出处
《工程力学》
EI
CSCD
北大核心
2008年第12期1-5,共5页
Engineering Mechanics
基金
教育部科学技术研究重点项目(82208082)
教育部留学回国人员科研启动基金项目(200724)
关键词
尖角裂纹
映射函数
裂纹尖端曲率
裂纹深度
裂纹应力场
sharp crack
mapping functions
crack tip curvature
crack depth
stress field around the crack
