A microcrack based continuous damage model for brittle geomaterials

被引：3
|
作者：
Shao, JF [1 ]
Rudnicki, JW
机构：
[1] USTL, EUDIL, LML, FR-59655 Villeneuve Dascq, France
[2] Northwestern Univ, Dept Civil Engn, Evanston, IL USA
来源：
ADVANCES IN ENGINEERING PLASTICITY, PTS 1-2 | 2000年 / 177-1卷
关键词：
anisotropy; brittle rock; damage; microcrack;
D O I：
10.4028/www.scientific.net/KEM.177-180.103
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A new microcrack based continuous damage model is developed to describe the behavior of brittle geomaterials under compression dominated stress fields. The induced damage is represented by a second rank tensor. The effective elastic compliance of damaged material is obtained from the Gibbs free energy function. The damage evolution is determined from microcrack propagation condition. The proposed model is applied to two brittle rocks. Comparison between test data and numerical simulations shows that the proposed model is able to describe main features of mechanical behaviors observed in brittle geomaterials under compressive stresses.
引用
收藏
页码：103 / 108
页数：6
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