热弹塑性有限元法和固有应变法是焊接变形预测的两种主要数值方法。
Thermal-elastic-plastic and inherent strains FE methods are two means, which have been applied to the prediction of welding deformation.
本文用弹塑性大应变问题的等参数有限元分析程序(LEPS程序)，对平板和圆棒试件的颈缩作了较全面的分析。
An isoparametric finite element program of large elastic-plastic strain (LEPS) is used to analyse the necking of a cylindrical bar and a plate specimen under uniaxial tension.
研究结果表明，弹塑性有限元分析法预测的寿命偏低，由残余应力可以较准确地确定最大应力应变循环。
The result shows that predicting life by elasticity-plasticity finite element analysis is low and the maximal stress-strain cycle can be calculated accurately by the residual stress method.
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