偏心裂纹与边裂纹柱扭转的应力强度因子<sup>*</sup>

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偏心裂纹与边裂纹柱扭转的应力强度因子^*

基金项目: * 国家教委博士点基金资助项目

摘要: 本文利用单裂纹解,将裂纹的不连续解分离,然后使用常规的调和函数解,使带有偏心裂纹或边裂纹的柱体扭转问题,归为解一组混合型积分方程,这组方程可联合使用奇异积分方程数值法与边界元法进行求解.文中对若干典型的裂纹柱体作了数值计算,得到了柱体的抗扭刚度和裂纹端点的应力强度因子.
- 柱体扭转 /
- 偏心裂纹 /
- 边界裂纹 /
- 奇异积分方程 /
- 边界元法 /
- 应力强度因子
Abstract: Using the single crack solution and the regular solution of harmonic funetion the torsion problem of a cracked cylinder is reduced to solving a set of mixed-type integral equations which can be solved by combining the numerical method of singular integral equation with the boundary element method. Several numerical examples are calculated and the stress intensity factors are obtained.
- torsion of cracked cylinder /
- singular integral equations /
- boundary element method /
- stress intensity factor /

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