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A Three-dimensional Stress Recovery Procedure for Composite Materials

Authors :
Carlo Pellegrino
Ugo Galvanetto
Bernhard A. Schrefler
Source :
Computers & Structures. 69:567-575
Publication Year :
1998
Publisher :
Elsevier BV, 1998.

Abstract

A three-dimensional stress recovery procedure is described in this paper. As usual, in the finite element method, we suppose to know a good approximation of the nodal values of the displacements; starting from the nodal displacements, we evaluate the strain components at Gauss points of a 27-node prismatic element, then the stress components at the same points. Stresses are finally projected to corner nodes with a smoothing procedure. The repeated application of such a procedure to a set of adjacent elements allows the construction of the stress field in a finite region of any deformed body. The proposed method finds its most natural application in the field of composite materials as shown in the numerical applications which reveal a good concordance of results with an equivalent three-dimensional finite element analysis.

Details

ISSN :
00457949
Volume :
69
Database :
OpenAIRE
Journal :
Computers & Structures
Accession number :
edsair.doi.dedup.....db12ba8b45482712953fbbfb0f2035a6
Full Text :
https://doi.org/10.1016/s0045-7949(98)80095-3