焊接节点半椭圆表面裂纹应力强度因子的权函数计算

Estimation of stress intensity factor for surface crack in weld joints

本文采用了一种改进的权函数法来计算焊接节点半椭圆表面裂纹应力强度因子ＫⅠ值，并给出了相应的数值处理方法。

In this paper, a weight function method is applied to estimate the stress intensity factor of surface crack in weld joints, the stress intensity factor is obtained in an analytical expression, also, the unmerical procedure is outlined. The estimation result for T type weld plate joint shows a good agreement with the photo elastic experimental data.