关于摄动有限元法中几种结构形式的摄动变分方程

作者在分析几何非线性问题时，把摄动法引入变分方程，推导了梁、板、扁壳的各级摄动变分方程，用这些方程可以方便地进行有限元的计算。

The Derivation of Variational Perturbation Equations of Several Forms of Structures in Perturbation Finite Element Method

In analysing the geometrically nonlinear problems , this paper introduces the perturbation method into the variational equation, and derives the variational perturbation equations concerning geometrically non- linear problems of beams,plates and shallow shells,By means of these equations,the FEM can be conve-niently introduced to solve these problems.