On stress computation in displacement finite element models
type: Item
instance of: scholarly article
title: On stress computation in displacement finite element models
zbMATH Open document ID: 0566.73057
DOI: 10.1016/0045-7825(86)90109-X
author: Leone Corradi
published in: Computer Methods in Applied Mechanics and Engineering
publication date: 1986-01-01T00:00:00Z
review text: The problem of stress description in displacement finite element models is dealt with. Because of kinematic restraints, such models are able to provide only a global average information on stresses, given in terms of generalized (natural) variables. Expressions for local stress fields as functions of these variables are proposed, which meet a condition of consistency with the assumed displacement model. Such a condition appears as the only requirement which stresses have to comply with and it is shown that it does not define a unique legitimate stress distribution in the element. The implications of possible alternatives are examined with reference to some frequently used plane elements.
Mathematics Subject Classification ID: 74S05
zbMATH DE Number: 3904095
zbMATH Keywords: stress description in displacement finite element models
zbMATH Keywords: kinematic restraints
zbMATH Keywords: global average information
zbMATH Keywords: terms of generalized (natural) variables
zbMATH Keywords: local stress fields
MaRDI profile type: Publication
cites work: Q3875490
cites work: Analysis of large quasistatic deformations of inelastic bodies by a new hybrid-stress finite element algorithm
cites work: The force method and its application in plasticity problems
cites work: A new method of stress calculation in the matrix displacement analysis
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cites work: Local and global smoothing of discontinuous finite element functions using a least squares method
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full work available at URL: 0045-7825(86)90109-x
OpenAlex ID: W2047847955
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description: scientific article; zbMATH DE number 3904095