利用边界元法分析承载焊接裂纹

Using boundary element method analyze loaded welding cracks

利用Betti互等定理推导出多裂缝对称边界元方程 ,通过高阶单元来求解双重积分 ,计算了不同种类的裂纹临界值 。

Using Betti reciprocal theorem the symmetric boundary element equation of multiple cracks are derived and through double integration resolving of higher order element the critical values of various cracks are calculated. This method is effective in solving loaded welding cracks.