fracture mode transition meaning in English

断口样式转变

Based on lots of experiments , by combining the progress in mesomechanics with fea computation and analysis , this thesis investigated many parameters " effect on crack with an arc - tip in plain mixed - mode fracture , and compared existing criteria for fracture initiation , fracture direction and fracture mode transition
本文主要的工作是在试验的基础上，结合细观断裂力学当前的研究进展，通过有限元计算和模拟分析，研究了平面复合型断裂中各种力学参量对圆弧尖端裂纹断裂的影响，比较分析了现有的起裂判据、断裂扩展方向的判定方法以及断裂模式的转换条件。