Grain based modelling of rocks using the combined finite-discrete element method

被引：109

作者：

Abdelaziz, Aly ^{[1
]}

Zhao, Qi ^{[1
]}

Grasselli, Giovanni ^{[1
]}

机构：

[1] Univ Toronto, Dept Civil & Mineral Engn, 35 St George St, Toronto, ON M5S 1A4, Canada

来源：

COMPUTERS AND GEOTECHNICS | 2018年 / 103卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Grain based modelling; Combined finite-discrete element method; Microscopic and macroscopic rock behaviour; MICROCRACKING BEHAVIOR; NUMERICAL-SIMULATION; FRACTURE-TOUGHNESS; STRENGTH; HETEROGENEITY; COMPRESSION; PROPAGATION; GRANITE; FAILURE; SIZE;

D O I：

10.1016/j.compgeo.2018.07.003

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

This paper describes the implementation and advantages of grain based modelling (GBM) in the combined finitediscrete element method (FDEM) to study the mechanical behaviour of crystalline rocks. GBM in FDEM honours grain petrological properties and explicitly models grain boundaries. The simulation results demonstrated that GBM in FDEM predicted more realistic microscopic and macroscopic response of rocks than conventional FDEM models. The explicit modelling of crack boundaries captured microscopic failure transition from along grain boundaries to coalescence along the shear band, dominated by intraphase cracks. This novel framework presents a gateway into further understanding the behaviour of crystalline rocks and granular minerals.

引用

页码：73 / 81

页数：9

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