A further study on incompatible models: revise-stiffness approach and completeness of trial functions

Citation
Cc. Wu et al., A further study on incompatible models: revise-stiffness approach and completeness of trial functions, COMPUT METH, 190(45), 2001, pp. 5923-5934
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
ISSN journal
0045-7825 → ACNP
Volume
190
Issue
45
Year of publication
2001
Pages
5923 - 5934
Database
ISI
SICI code
0045-7825(2001)190:45<5923:AFSOIM>2.0.ZU;2-7
Abstract
The paper concerns the incompatible finite element methodology. First, the patch test condition (PTC) for axisymmetric problems is studied. For the im plementation of PTC, a post-treatment approach, the revise-stiffness (R-s) method is suggested to construct incompatible elements. A quadratic-complet eness incompatible displacement mode with the fewest element parameters is formulated. In terms of the R-s approach and the general revise-displacemen t (R-u) method, a set of four-node incompatible elements is constructed for plane and axisymmetric problems. Numerical tests show that the suggested a pproaches in this paper can be used to produce various incompatible models with high performance. (C) 2001 Elsevier Science B.V. All rights reserved.