A four-node solid shell element formulation with assumed strain

被引：1

作者：

Kemp, BL ^{[1
]}

Cho, CM ^{[1
]}

Lee, SW ^{[1
]}

机构：

[1] Univ Maryland, Dept Aerosp Engn, College Pk, MD 20742 USA

来源：

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING | 1998年 / 43卷 / 05期

关键词：

solid shell formulation; four-node element; assumed strain fields; bubble function displacement;

D O I：

10.1002/(SICI)1097-0207(19981115)43:5<909::AID-NME450>3.0.CO;2-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A set of four-node shell element models based on the assumed strain formulation is considered here. The formulation allows for changes in the shell thickness. As a result, the kinematics of deformation are described by purely vectorial variables, without using rotational angles. The present study investigates the use of bubble function displacements and the assumed strain field. Careful selection of the assumed strain terms generates an element whose order of numerical integration does not increase even when the bubble function displacements are added. Results for the four-node element without any bubble function terms show sensitivity to element distortion. Use of the bubble functions with a carefully chosen assumed strain field greatly improves element performance. (C) 1998 John Wiley & Sons, Ltd.

引用

页码：909 / 924

页数：16

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