To accurately predict the forming limit in aluminum alloy sheet forming, ductile fracture criterion is introduced into numerical simulation.
为了准确地预测铝合金板材成形极限，将韧性断裂准则引入到数值模拟中。
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。
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。
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