At present, some ductile fracture criteria 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
Using the ductile fracture criterion as the reference for judging the limit height of the process to put the necessary simulation results into the criterion.
并利用韧性断裂准则作为胀形高度极限的判断依据，将模拟得到的必要数据代入到准则中。
3
This paper predicted the forming limit of sheet metals by using the mechanical property parameters of materials and combining the ductile fracture criteria with finite element simulation.