Model for prediction of simultaneous time-dependent damage evolution in multiple plies of multidirectional polymer composite laminates and its influence on creep

被引：6

作者：

Asadi, Amir ^{[1
]}

Raghavan, J. ^{[1
]}

机构：

[1] Univ Manitoba, Dept Mech & Mfg Engn, Composite Mat & Struct Res Grp, Winnipeg, MB R3T 2N2, Canada

来源：

COMPOSITES PART B-ENGINEERING | 2015年 / 79卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Polymer-matrix composites (PMCs); Creep; Damage mechanics; Analytical modeling; CURRENT FAILURE THEORIES; TRANSVERSE CRACKING; MATRIX COMPOSITES; CONSTITUTIVE-EQUATIONS; CAPABILITIES; MECHANICS; BEHAVIOR; PART;

D O I：

10.1016/j.compositesb.2015.04.039

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A model to predict time-dependent evolution of simultaneous transverse cracking developed in multiple plies during creep loading and its effects on creep of multidirectional polymer matrix composite laminates is presented. The stress states in the intact regions of the plies are determined using the lamination theory during an incremental change in time. The stored elastic energy, determined using this stress state, is compared with a critical stored elastic energy value for damage to determine if a ply would fracture after the increment. If fracture is predicted, variational analysis is used to determine the perturbation in ply stresses due to cracking. This procedure is repeated to determine the crack evolution and creep strain. Model predictions compared well with experimental results for a [+/-theta(m)/90(n)](s) laminate. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：359 / 373

页数：15

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