Applied Mathematics and Mechanics (English Edition) ›› 2002, Vol. 23 ›› Issue (2): 127-137.

• 论文 • 上一篇    下一篇

THE DISPLACEMENT FUNCTION OF QUASI-CONFORMING ELEMENT AND ITS NODE ERROR

何东升, 唐立民   

  1. Department of Engineering Mechanics, Dalian University of Technology, Dalian 116023, P R China
  • 收稿日期:2000-12-25 修回日期:2001-10-09 出版日期:2002-02-18 发布日期:2002-02-18

THE DISPLACEMENT FUNCTION OF QUASI-CONFORMING ELEMENT AND ITS NODE ERROR

HE Dong-sheng, TANG Li-min   

  1. Department of Engineering Mechanics, Dalian University of Technology, Dalian 116023, P R China
  • Received:2000-12-25 Revised:2001-10-09 Online:2002-02-18 Published:2002-02-18

摘要: Based on the strain formulation of the quasi-conforming finite element, displacement functions are constructed which have definite physical meaning, and a conclusion can be obtained that the coefficients of the constant and the linear strain are uniquely determined, and the quasi-conforming finite element method is convergent to constant strain. There are different methods for constructing the rigid displacement items, and different methods correspond to different order node errors, and this is different from ordinary displacement method finite element.

Abstract: Based on the strain formulation of the quasi-conforming finite element, displacement functions are constructed which have definite physical meaning, and a conclusion can be obtained that the coefficients of the constant and the linear strain are uniquely determined, and the quasi-conforming finite element method is convergent to constant strain. There are different methods for constructing the rigid displacement items, and different methods correspond to different order node errors, and this is different from ordinary displacement method finite element.

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