本文对多边形厚板弯曲问题，提出了一种新的简单的边界元解法。
In this paper a new simple boundary element method for solving polygonal thick plate bending problems is proposed.
针对7075铝合金中厚板真空电子束焊接过程，采用非线性有限元法，对焊接接头的残余应力分布进行了数值模拟。
Aim at 7075 aluminium alloy vacuum electronic beam welding, using nonlinear finite element, the numerical simulation of the residual stresses distribution in welding joint was made.
在板的有限元分析中，构造协调和无剪切闭锁现象的中厚板单元一直是人们所关注的问题和难题。
The structure coordination and shear unlocking middle thick plate element is a problem to which people pay close attention in the finite element analysis of plate.
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