期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.145502
关键词
-
资金
- OTKA [T049209]
- JSPS [19340110]
- KAUST [KUK-I1-005-04]
- Grants-in-Aid for Scientific Research [19340110] Funding Source: KAKEN
We study subcritical fracture driven by thermally activated damage accumulation in the framework of fiber bundle models. We show that in the presence of stress inhomogeneities, thermally activated cracking results in an anomalous size effect; i.e., the average lifetime < t(f)> decreases as a power law of the system size < t(f)> similar to L-z, where the exponent z depends on the external load sigma and on the temperature T in the form z similar to f(sigma/T-3/2). We propose a modified form of the Arrhenius law which provides a comprehensive description of thermally activated breakdown. Thermal fluctuations trigger bursts of breakings which have a power law size distribution.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据