带裂纹厚壁圆筒应力强度因子的几种计算方法

Several Methods for Calculating Stress Intensity Factors of Thick Walled Cylinder with Cracks

确定应力强度因子是断裂力学的重要内容。该文在考虑裂纹尖端应力应变奇异性的前提下 ,通过有限元的位移法和应力法分别计算了承受高压厚壁筒裂纹尖端处的应力强度因子 ,并且利用边界配置法的结果比较这 2种方法的精度。同时 。

Determining stress intensity factors is an important content of fracture mechanics. Taking into account of singularity of stress and strain at the tip of crack, stress intensity factors of thick walled cylinder under high inner pressure are found by stress and displacement of finite element method. And the accuracy of these two methods is studied in comparison with boundary collocation method. Meanwhile, the rules of the stress intensity factors with the change of crack depths and size of thick walled cylinder are studied