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ying yong song chi yuan li jie you xian yuan wen ti de chu bu tan tao
Author(s): 
Pages: 88-97
Year: Issue:  2
Journal: Wuhan Shipbuilding

Keyword:  单元体约束反力有限单元法节点编号松弛原理元问题线性代数方程组主约束刚度矩阵平面问题;
Abstract: <正> 一、概述有限单元法近年来在弹性连续介质力学电获得了广泛的应用。它的基本思想是用离散的、等效的单元体组合去代替一个连续统,然后在假定单元体位移场的基础上,应用变分原理求出问题的近似解。实践表明,只要单元体划分得当,外力转换合理,并且所假设的位移函数满足连续和收敛方面的基本条件,那么这种近似处理方法是十分成功和卓有成效的。按照通常的处理方式,应用有限单元法时所遇到的基本数学形式是将力、位移和刚度系数都关联到一起的高阶线性代数方程组。它的系数矩阵(刚度矩阵)虽然是稀疏
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