A two-scale model for dynamic damage evolution

被引：26

作者：

Keita, Oumar ^{[1
]}

Dascalu, Cristian ^{[2
,3
]}

Francois, Bertrand ^{[1
]}

机构：

[1] Univ Libre Bruxelles, Bldg Architecture & Town Planning Dept BATir, B-1050 Brussels, Belgium

[2] Univ Paris 06, Inst Jean Le Rond Alembert, UMR 7190, F-75005 Paris, France

[3] CNRS, Inst Jean Le Rond Alembert, UMR 7190, F-75005 Paris, France

来源：

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS | 2014年 / 64卷

关键词：

Micro-cracks; Dynamic propagation; Homogenization; Damage laws; Wave dispersion; HOMOGENIZATION; DERIVATION; BEHAVIOR; FAILURE; GROWTH;

D O I：

10.1016/j.jmps.2013.11.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents a new micro-mechanical damage model accounting for inertial effect. The two-scale damage model is fully deduced from small-scale descriptions of dynamic micro-crack propagation under tensile loading (mode I). An appropriate micro-mechanical energy analysis is combined with homogenization based on asymptotic developments in order to obtain the macroscopic evolution law for damage. Numerical simulations are presented in order to illustrate the ability of the model to describe known behaviors like size effects for the structural response, strain-rate sensitivity, brittle-ductile transition and wave dispersion. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：170 / 183

页数：14

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