用三维弹塑性有限元分析方法，全面分析了点焊搭接接头的应力分布情况。
Using method of three dimensional FEM analysis, whole stress distribution in the joints is are obtained.
文章应用非线性弹塑性模型，对层状土地层中浅埋隧道全断面开挖过程进行了三维有限元分析。
A nonlinear elastoplastic model is applied to simulate the full face 3-d excavation process of a shallow tunnel embedded in layered soil.
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