摘要
将有限单元半解析法用于求解三维填充式波形空间结构。构造了结构受弯窄条的反力矩阵。根据有限单元半解析法将位移场表示成两个方向位移的组合:一个方向以函数形式给定位移形状;另一方向为求解有限单元法的代数方程组。最后通过算例验证表明:有限单元半解析法对于求解空间填充式结构非线性问题具有精度高,收敛快,易于计算机编程的优点。
Using Semi - Analytical Method of FEM to computer three - dimensional infilling wave shape system, this article constructs a counterforce matrix. According to the Semi - Analytical Method of FEM, the placement field is expressed as a combination of the placements in two directions： one is a displacement showed by function; another is a system of algebraic equations used to solve FEM. In the end, the result shows that the Semi - Analytical Method of FEM has the advantages of high precision, quick convergence and easy to program.
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2005年第4期88-90,共3页
Journal of Air Force Engineering University(Natural Science Edition)
基金
总后科研资助项目(HX99502)
关键词
有限单元半解析法
三维填充式波形结构
薄壁空间体系
几何非线性
Semi - Analytical Method of FEM
three - dimensional infilling wave shape system
thin wall threedimensional system
geometric non - linear
