A statistical micromechanical model of anisotropic damage for SMC composites

被引：57

作者：

Fitoussi, J ^{[1
]}

Guo, G ^{[1
]}

Baptiste, D ^{[1
]}

机构：

[1] Ecole Natl Super Arts & Metiers, Lab Microstruct & Mecan Mat, URA 1219, Paris, France

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 1998年 / 58卷 / 05期

关键词：

fiber/matrix interface; micro-macro model; damage mechanisms; failure statistic;

D O I：

10.1016/S0266-3538(97)00163-2

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The objective of this paper is to predict the entire stress/strain curves and the loss of stiffness with damage for sheet-moulding-compound (SMC) composites. This is achieved by developing a statistical micro-macro relationship with the help of the model of Mori and Tanaka. In the case of an SMC composite with a 32% fiber volume fraction, debonding at the fiber/matrix interfaces is the predominant 'microdamage' mechanism. In order to relate the microstructure, and its local perturbations, to the macroscopic damaged behaviour, we introduce a statistical local damage criterion and the concept of the equivalent damaged inclusion in the micro-macro relationship of Mori and Tanaka. This paper shows the relationship between the statistical interface failure criterion and the scattering observed on the macroscopic mechanical test results. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：759 / 763

页数：5

共 6 条

[1] THE ELASTIC FIELD OUTSIDE AN ELLIPSOIDAL INCLUSION [J].

ESHELBY, JD .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1959, 252 (1271) :561-569

[2] Prediction of the anisotropic damaged behavior of composite materials: Introduction of multilocal failure criteria in a micro-macro relationship [J].

Fitoussi, J ;

Bourgeois, N ;

Guo, G ;

Baptiste, D .

COMPUTATIONAL MATERIALS SCIENCE, 1996, 5 (1-3) :87-100

[3] Determination of a tridimensional failure criterion at the fibre/matrix interface of an organic-matrix/discontinuous-reinforcement composite [J].

Fitoussi, J ;

Guo, G ;

Baptiste, D .

COMPOSITES SCIENCE AND TECHNOLOGY, 1996, 56 (07) :755-760

[4]

KEYVANI M, 1992, THESIS ECOLE CENTRAL

[5]

Mura T, 1987, MICROMECHANICS DEFEC

[6] HARDENING OF CRYSTALS BY NON-DEFORMING PARTICLES AND FIBRES [J].

TANAKA, K ;

MORI, T .

ACTA METALLURGICA, 1970, 18 (08) :931-&

← 1 →