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发布时间：2019-03-09

论文类型：期刊论文

发表时间：2011-03-01

发表刊物：CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES

收录刊物：EI、SCIE、Scopus

卷号：73

期号：2

页面范围：103-135

ISSN号：1526-1492

关键字：quasi-conforming; assumed displacement; flat-shell; Taylor polynomial expansion

摘要：In this paper, an assumed displacement quasi-conforming finite element method with truncated polynomial expansions of in-domain displacements and derived expansions of strains is introduced. Based on the method a four-node quadrilateral flat shell element with complete quadratic polynomials for membrane and bending displacement fields is developed. Numerical tests are carried out for validation of the present element. The results show that the present element preserves all the advantages of the quasi-conforming i.e., explicit stiffness matrix, convenient post processing and free from membrane locking and shear locking. The tests also prove that the present element gives excellent results, especially for the bending moments, and possesses a stable convergence rate.