At present, some ductile fracturecriteria are applied only to predict the forming limit in stamping forming of simple axisymmetric part.
目前已提出的韧性断裂准则预测板料成形极限，只在简单轴对称件中得到应用。
2
The calculation results show that the fracturecriteria of the rock compression-shear mixed-mode crack based on the strength criteria are rational;
计算结果表明，基于强度准则建立的岩石压剪断裂判据比较合理；
3
Mesoscopic damage size on the top of crack is analysed, the effective stress strength factor is defined, the mode I crack damage fracturecriteria is presented.