本文提出一种用分区变分原理和样条函数相结合的有限元方法，解决组合型旋转壳受力分析问题。
A finite element method using subregion variational principle and spline function in this paper is presented to solve the problem of combined shell of revolution.
这个方法是建立在三次样条函数、梁振动函数(或三角函数)及变分原理基础上。
The method based on the cubic B-spline function, beam vibration function (or trigonometric functions) and variation principle.
本文依据模糊变分原理以及峰型模糊数的运算法则，建立了模糊结构分析的数值理论和方法。
This dissertation established numerical methods in the fuzzy structural analysis on the basis of fuzzy variational principle and peak fuzzy number.
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