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Homogenization in thermoelasticity: application to composite materials

Abstract

One of the obstacles to the industrial use of metal matrix composite materials is the damage they rapidly undergo when they are subjected to cyclic thermal loadings; local thermal stresses of high level can develop, sometimes nearby or over the elastic limit, due to the mismatch of elastic and thermal coefficients between the fibers and the matrix. For the same reasons, early cracks can appear in composites like ceramic-ceramic. Therefore, we investigate the linear thermoelastic behaviour of heterogeneous materials, taking account of the isentropic coupling term in the heat conduction equation. In the case of periodic materials, recent results, using the homogenization theory, allowed us to describe macroscopic and microscopic behaviours of such materials. This paper is concerned with the numerical simulation of this problem by a finite element method, using a multiscale approach. (orig.).
Authors:
Peyroux, R; [1]  Licht, C [1] 
  1. Lab. de Mecanique et Genie Civil, Univ. Montpellier 2, 34 Montpellier (France)
Publication Date:
Nov 01, 1993
Product Type:
Conference
Report Number:
CONF-930605-
Reference Number:
AIX-25-051638; EDB-94-110331
Resource Relation:
Journal Name: Journal de Physique. 4; (France); Journal Volume: 3:7,pt.3; Conference: 3. European conference on advanced materials and processes, 3. Conference Europeenne sur les Materiaux et les Procedes Avances, Paris (France), 7-10 Jun 1993
Subject:
36 MATERIALS SCIENCE; COMPOSITE MATERIALS; MICROSTRUCTURE; THERMOELASTICITY; CERAMICS; CRACK PROPAGATION; CRACKS; ELASTICITY; FATIGUE; FIBERS; FINITE ELEMENT METHOD; MATRIX MATERIALS; STRESSES; THERMAL CYCLING; THERMAL EXPANSION; THERMAL STRESSES; CALCULATION METHODS; EXPANSION; MATERIALS; MECHANICAL PROPERTIES; NUMERICAL SOLUTION; TENSILE PROPERTIES; 360601* - Other Materials- Preparation & Manufacture; 360603 - Materials- Properties
OSTI ID:
7276744
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1155-4339; CODEN: JPICEI
Submitting Site:
FRN
Size:
Pages: 1623-1626
Announcement Date:
May 13, 2001

Citation Formats

Peyroux, R, and Licht, C. Homogenization in thermoelasticity: application to composite materials. France: N. p., 1993. Web.
Peyroux, R, & Licht, C. Homogenization in thermoelasticity: application to composite materials. France.
Peyroux, R, and Licht, C. 1993. "Homogenization in thermoelasticity: application to composite materials." France.
@misc{etde_7276744,
title = {Homogenization in thermoelasticity: application to composite materials}
author = {Peyroux, R, and Licht, C}
abstractNote = {One of the obstacles to the industrial use of metal matrix composite materials is the damage they rapidly undergo when they are subjected to cyclic thermal loadings; local thermal stresses of high level can develop, sometimes nearby or over the elastic limit, due to the mismatch of elastic and thermal coefficients between the fibers and the matrix. For the same reasons, early cracks can appear in composites like ceramic-ceramic. Therefore, we investigate the linear thermoelastic behaviour of heterogeneous materials, taking account of the isentropic coupling term in the heat conduction equation. In the case of periodic materials, recent results, using the homogenization theory, allowed us to describe macroscopic and microscopic behaviours of such materials. This paper is concerned with the numerical simulation of this problem by a finite element method, using a multiscale approach. (orig.).}
journal = []
volume = {3:7,pt.3}
place = {France}
year = {1993}
month = {Nov}
}