MODELLING QUASI-BRITTLE FAILURES OF MATERIALS

被引：0
|
作者：
Broz, P.
机构：
来源：
FIBRE CONCRETE 2009: TECHNOLOGY, DESIGN, APPLICATION | 2009年
关键词：
crack propagation; decohesion; failure; structure response; two-scale model;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Quasi-brittle materials (eg concrete and some ceramics) distinguish themselves by a dissipation before to cracking being with no or irrelevant permanent deformations. Atomic decohesions are the leading mechanisms to cause a rapid growth of a crack by instability. Anyhow, the quasi-brittle materials may possess some reversible slidings of nano- or microcracks taken into consideration as initial defects to induce a loss of energy by friction. Both mechanisms are unsafe because there is no precursor to wake watchers up.
引用
收藏
页码：65 / 70
页数：6
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