A three-dimensional stress recovery procedure for composite materials

U. Galvanetto; C. Pellegrino; B. A. Schrefler

doi:10.1016/S0045-7949(98)80095-3

A three-dimensional stress recovery procedure for composite materials

U. Galvanetto, C. Pellegrino, B. A. Schrefler

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

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.

Original language	English (US)
Pages (from-to)	567-575
Number of pages	9
Journal	Computers and Structures
Volume	69
Issue number	5
DOIs	https://doi.org/10.1016/S0045-7949(98)80095-3
State	Published - Jan 1 1998

Keywords

Composite materials
Layered beam
Three-dimensional stress recovery

ASJC Scopus subject areas

Computer Science Applications
Computational Mechanics

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10.1016/S0045-7949(98)80095-3

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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.",

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AU - Galvanetto, U.

AU - Pellegrino, C.

AU - Schrefler, B. A.

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N2 - 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.

AB - 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.

KW - Composite materials

KW - Layered beam

KW - Three-dimensional stress recovery

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A three-dimensional stress recovery procedure for composite materials

Abstract

Keywords

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