用拟协调元进行壳体非线性稳定分析

本文用拟协调模式非线性有限元进行了柱壳块的弹性稳定性分析,并提出了一个进行壳体几何非线性稳定性分析的方法。计算结果表明,为达到相同的计算精度,拟协调元只需要同类位移元个数的四分之一.

Nonlinear Stability Analysis of Shells Using The Quasi—Conforming Element Method

In this paper,the elastic stability analysis of the cylinclrial panel is presented Using nonlinear finite element of the Quasi-conforming model, and a geometrical nonlinear shell stability analysis method is suggested Numerical examples indicated that the needed number of the elements of the Quasi-Conforming model is only a quarter of that of the displacement model for reaching the same computiug accuracy.