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Note on an approximate method for computing consistent conjugate stresses in elastic finite elements
Author(s) -
Oden J. T.,
Reddy J. N.
Publication year - 1973
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620060107
Subject(s) - finite element method , displacement (psychology) , point (geometry) , stress (linguistics) , domain (mathematical analysis) , conjugate gradient method , conjugate , mathematics , mathematical analysis , structural engineering , geometry , algorithm , engineering , psychology , linguistics , philosophy , psychotherapist
A technique is described wherein improved stresses can be computed in finite element models based on displacement approximations. The method is based on the idea of consistent stress approximations and it approximates such stresses using the notion of a domain of influence of the stress intensity at a nodal point. Considerable improvement in accuracy of the stresses is obtained with little difficulty.