具有自适应影响半径的无单元法  

ELEMENT-FREE GALERKIN METHOD WITH ADAPTIVE INFLUENTIAL RADIUS

作　　者：周瑞忠[1] 周小平[1] 缪圆冰[1] 

机构地区：[1]福州大学土木建筑工程学院,福建福州350002

出　　处：《工程力学》2001年第6期94-99,93,共7页Engineering Mechanics

摘　　要：本文讨论无单元法的权函数问题,并首次提出在权函数中采用自适应影响半径,以适应结点分布的随机性。实际算例表明,使用自适应影响半径的权函数对求解应力集中或断裂力学问题具有较大的优越性。This paper deals with the weight function of Element-Free Galerkin Method. A way to incorporate the adaptive influential radius in weight function for adapting the randomness to distributed nodes is proposed. Numerical examples show that a weight function of using adaptive influential radius has advantages to solve the fracture problems or stress concentration problems.

关 键 词：无单元法 权函数 自适应影响半径 结点分布 随机性 应力集中 数值计算方法 断裂力学 

分 类 号：O346.1[理学—固体力学] O241.82[理学—力学]