摘要
研究层合壳体结构的有限单元解法。在单层壳体单元的基础上,提出用于分析层合壳体结构的一种新的高阶单元———8结点壳体曲面单元,并推导该单元的刚度矩阵。新单元的计算方法不改变壳体结构的一般假设条件,利用厚度方向分段积分来完成问题的求解,并对层合截锥壳进行计算。算例证明该方法是有效的,而且可以减小计算量,在理论上也更简洁,很适用于工程计算。
A new method of the finite element is determined about the laminated shell structure. Based on the element of shell with a single layer, a new element with high order to solve the laminated shell structure and its stiff-matrix are constructed. The common hypotheses of the shell structure aren＇t aherative in the new finite element method, and it finishes the solution through the integral of the different laminas. In the end, the examples certify that the new method is reasonable, it can reduce the quantity of the calculation and it is brief in the theory, so it can be used widely in the engineering.
出处
《机械强度》
EI
CAS
CSCD
北大核心
2005年第6期840-843,共4页
Journal of Mechanical Strength
基金
国家自然科学和中国工物院联合基金(10076014)
西南交通大学校基金(2002B08)资助项目
关键词
层合壳体
刚度矩阵
高阶单元
Laminated shell structure
Stiff matrix
Element with high orders
