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。
To accurately predict the forming limit in aluminum alloy sheet forming, ductile fracture criterion is introduced into numerical simulation.
本文主要针对混凝土双参数模型和双k断裂准则进行了以下几方面的研究。
Focusing on the Two Parameter Fracture Method and the double-Kcriterion, the following work is carried on in this paper.
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。
At present, some ductile fracture criteria are applied only to predict the forming limit in stamping forming of simple axisymmetric part.
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