计算切口应力集中系数的无限相似单元法

GEOMETRICALLY SIMILAR ELEMENT METHOD TO CALCULATE THE STRESS CONCENTRATION FACTOR OF NOTCH

在边界条件和其他几何条件相同时，可以通过切口的应力集中系数求得相应裂纹问题的应力强度因子。边界条件比较复杂时，应力集中系数较难求得，而应力强度因子可以通过无限相似单元方法求得，提出了计算平面切口应力集中系数的无限相似单元方法。该方法适应性好、精度高、使用方便。用该方法对几个问题进行了计算。

The stress intensity factor of crack can be calculated from the stress concentration factor of corresponding notch when the boundary condition and other geometric conditions are in the same. The more complicate the boundary condition, the more difficulty to calculate the stress concentration factor. The stress intensity factor can be Obtained by the transition method of geometrically similar element. The transition method of geometrically similar element for computation the stress concentration factor of notch is propoSed and some problems is computed by this method.