A coefficient of restitution of rock materials

被引：72

作者：

Imre, B. ^{[1
]}

Raebsamen, S. ^{[1
]}

Springman, S. M. ^{[1
]}

机构：

[1] ETH, Inst Geotech Engn, CH-8093 Zurich, Switzerland

来源：

COMPUTERS & GEOSCIENCES | 2008年 / 34卷 / 04期

关键词：

coefficient of restitution; distinct element method (DEM); hysteretic damping; granite; limestone; sandstone;

D O I：

10.1016/j.cageo.2007.04.004

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

At a macroscopic scale, even a purely elastic contact between rock particles is accompanied by energy dissipation. The resulting hysteretic loop of the stress/strain path during such a loading and unloading event suggests that grains recover slower to their original shape than when they were first deformed. This contact behaviour may be simulated in distinct element codes by utilizing a hysteretic damping contact model. In this research, values for the elastic coefficient of restitution for components of a molasse conglomerate were measured using a newly developed drop-test apparatus. These values can be used to calibrate or to verify constitutive models that incorporate strain-rate-independent, elastic hysteretic damping. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：339 / 350

页数：12

共 11 条

[1]

[Anonymous], MITTEILUNGEN NATURFO

[2] LISTENING TO COEFFICIENT OF RESTITUTION [J].