Prediction of failure in atmospheric ice under triaxial compressive stress

被引：14

作者：

Farid, H. ^{[1
]}

Saeidi, A. ^{[1
]}

Farzaneh, M. ^{[1
]}

机构：

[1] Univ Quebec Chicoutimi, Canada Res Chair Atmospher Icing Engn Power Netwo, Www Cigele Ca, Chicoutimi, PQ, Canada

来源：

COLD REGIONS SCIENCE AND TECHNOLOGY | 2017年 / 138卷

关键词：

Atmospheric ice; Triaxial load; Failure criteria; MICROSTRUCTURAL CHANGE; STRENGTH; BEHAVIOR; FRACTURE;

D O I：

10.1016/j.coldregions.2017.03.005

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Triaxial experiments have been carried out on atmospheric ice samples under various conditions. Samples have been obtained from ice accumulated on a rotating cylinder inside the INGIVRE (Canada Research Chair on Atmospheric Icing Engineering of Power Networks) icing wind tunnel. Samples were tested at the same temperature at which they had been accumulated: at -5, -10 and -15 degrees C under three strain rates 10(-4), 10(-3) and 10(-2) s(-1). Tests were conducted under various confinement pressures. At a temperature close to the melting point, atmospheric ice strength increases up to a certain value of confinement, and then decreases significantly. In the case where atmospheric ice strength increases continuously with increasing confinement for lower temperatures, the Mohr-Coulomb and Hoek-Brown failure criteria have been investigated in order to predict the failure of atmospheric ice. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：46 / 56

页数：11

共 25 条

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