摘要
本文首先构造了一种插值形式，用于模拟壳体有限单元的壳曲面（中面）几何性质。以此为基础，构造了壳体中场变量的插值格式，建立了一个５节点、１９－β四边形杂交混合（薄）曲壳单元。
An interpolation formulation is presented for modeling a curved shell surface (mid surface). This formulation is capable of ensuring the smoothness of shell surface at nodal points, as well as the continuity of shell surface over boundaries of neighboring elements. A 5 node, 19 β quadrilateral hybrid/mixed curved shell element is formulated based upon the interpolation.Numerical examples demonstrate its capability of providing an excellant convergence rate and enhancing computational accuracy and efficiency.
出处
《西南交通大学学报》
EI
CSCD
北大核心
1997年第2期143-149,共7页
Journal of Southwest Jiaotong University
基金
国家自然科学基金
国家教委博士点基金
关键词
薄壳结构
壳体结构
应力
应变
有限元
数值解
interpolation function
curved surface modeling
shell structure
hybrid/mixed finite element
