Stick-slip shear failure along bimaterial interfaces: An experimental study on granite and basalt

被引：2
|
作者：
Zhou, Xiao-Ping [1 ,2 ]
Huo, Zi-Long [2 ]
Berto, Filippo [3 ]
机构：
[1] Northeastern Univ, Sch Resources & Civil Engn, Shenyang, Peoples R China
[2] Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China
[3] Norwegian Univ Sci & Technol, Dept Mech Engn, Trondheim, Norway
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2022年 / 45卷 / 07期
基金：
中国国家自然科学基金;
关键词：
bimaterial system; critical crack length; critical slip-weakening displacement; rupture propagation velocity; shear stress drop; stick-slip shear failure; LABORATORY EARTHQUAKES; CONSTITUTIVE RELATIONS; RUPTURE; PARAMETERS; FRICTION; EVENTS; ONSET; ZONE;
D O I：
10.1111/ffe.13718
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Characteristics of stick-slip shear failure under mode II conditions are experimentally investigated using a bimaterial system (consisting of granite and basalt) with a simulated fault. This experimental study is concerned with the effects of normal stress, shear rate, and fault roughness on the stick-slip behaviors along the heterogeneous faults. Highly non-uniform stress distribution along the simulated fault dictates the initiation of stick-slip failure. The nucleation starts at a firstly yielded material point, and as the energy accumulates in the heterogeneous fault, the nucleation zone is progressively formed and transited into unstable rupture. This experimental study aims at gaining scientific insights regarding earthquake source processes.
引用
收藏
页码：2023 / 2046
页数：24
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