Universal Effective Toughness Distribution for Heterogeneous Brittle Materials Application to Indentation Crack Arrest

被引：0
|
作者：
Roux, S. [1 ]
Charles, Y. [2 ]
Hild, F. [2 ]
Vandembroucq, D. [1 ,2 ]
机构：
[1] CNRS St Gobain, Lab Surface Verre & Interfaces, Unite Mixte Rech, 39 Quai Lucien Lefranc, F-93303 Aubervilliers, France
[2] Univ Paris 04, Lab Mecan & Tech, ENS Cachan, UMR CNRS 8535, 61 Ave President Wilson, F-94235 Cachan, France
来源：
IUTAM SYMPOSIUM ON SCALING IN SOLID MECHANICS | 2009年 / 10卷
关键词：
Brittleness; toughness; size-effects; CHARGE-DENSITY WAVES; FRACTURE; PROPAGATION; EQUATIONS; DYNAMICS; MEDIA;
D O I：
10.1007/978-1-4020-9033-2_1
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A brittle material whose microstructure is heterogeneous and random will display at large enough scales a deterministic brittle character. Prior to this limit, the effective macroscopic toughness of the material has a statistical distribution whose shape is discussed in the present paper. It is proposed that it has a universal shape characterized by only two parameters, namely, an asymptotic toughness, and a size-dependent width. Predictions of this theoretical result expressed in terms of crack size distribution are tested against experimental indentation data.
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页码：1 / +
页数：3
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