对网格畸变不敏感的任意四边形平面单元  

Mesh Distortion Insensitive Arbitrary Quadrilateral Plane Element

作　　者：杜守军[1,2] 臧浩刚[1,2] 

机构地区：[1]河北农业大学 [2]华北电力大学机械系

出　　处：《华北电力大学学报（自然科学版）》1998年第4期92-97,共6页Journal of North China Electric Power University：Natural Science Edition

摘　　要：以多项式序列为基底构造有限元子空间，在广义坐标下采用与等参数变换类似的方法，按照位移有限元模式，建立了任意四边形协调平面单元；这种单元列式简单、求解精度高、可靠性好，尤其重要的是对单元网格畸变不敏感。By adopting the polynomial sequence as the base of the element subspace, taking advantage of the isoparametric transformation under the generalized coordinate, and by following the traditional displacement F. E. M. procedure, the formulation and examples about a mesh distortion insensitive arbitrary quadrilateral plane element are presented. It is shown that the present element possesses the characteristics of high precision, reliability and is easy to use. What is most important is that it is less sensitive to mesh distortion.

关 键 词：平面单元 网格畸变 广义坐标 梁 建筑结构 

分 类 号：TU323.3[建筑科学—结构工程]