变厚度扁球壳的非线性分析

THE NONLINEAR ANALYSIS OF THE SHALLOW SPHERICAL SHELLS WITH VARIABLE THICKNESS

本文利用边界元方法分析了变厚度扁球壳的非线性问题。引入了与变厚因素有关的等效载荷(?),利用板的初等函数基本解,而不是直接寻求变厚扁球壳的基本解,使原问题的难度大大减少,采用了连续性强、精度高的样条函数插值,即使在划分节点取得较少的情况下,结果的精度是令人满意的。

In this paper,we analyse the shallow spherical shells with variable thickness by the boundary element method.After introducing the equivalent load with respect to (N,W, H).We reduce the problem to the analysis of a thin plate.The results with satisfactory pricision can be obtained even when fewer degree of freedom are implemented. Keywords:Shallow spherical shell with variable thickness,BEM,nonlinear analysis.