In this paper, facing the convergent problem of plastic forming using large incremental step, we deduced the iterative formula used in analysis of elastic-plastic plate forming finite element method.
此文针对塑性成形有限元分析大增量加载的收敛性困难，推导了用于板料成形弹塑性有限元分析的牛顿一致迭代公式。
In this paper the mechanism of plastic fatigue crack growth (PFCG) was analyzed and an appropriate criterion was proposed. Elastic-plastic (incremental) finite-element method was used to study PFCG.
本文分析了裂纹塑性疲劳扩展的力学机理，提出了裂纹塑性疲劳扩展的判据。
Based on the nonlinear, elastic-plastic finite element method theory, the modeling approach of the numerical simulation of incremental sheet metal forming was studied firstly in this project.
本课题基于非线性、弹塑性有限元理论方法，对金属板料渐进成形的数值模拟的建模方法进行研究。
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