Influence of single flaw on the failure process and energy mechanics of rock-like material

This paper investigates the influence of a flaw on crack initiation, the failure mode, deformation field and energy mechanism of the rock-like material under uniaxial compression. The results of laboratory test and numerical simulation demonstrate the flaw inclination effect can be classified into t...

Full description

Saved in:
Bibliographic Details
Published in:Computers and geotechnics 2017-06, Vol.86, p.150-162
Main Authors: Jin, Jin, Cao, Ping, Chen, Yu, Pu, Chengzhi, Mao, Dawei, Fan, Xiang
Format: Article
Language:English
Subjects:
Compression
Compression tests
Computer simulation
Crack initiation
Cracks
Deformation
Deformation mechanisms
Dissipation
Energy
Energy mechanism
Failure pattern
Inclination
Mathematical models
Mechanics
Micro-crack increase
Particle deformation field
PFC
Rocks
Soils
Tips
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper investigates the influence of a flaw on crack initiation, the failure mode, deformation field and energy mechanism of the rock-like material under uniaxial compression. The results of laboratory test and numerical simulation demonstrate the flaw inclination effect can be classified into three groups: 0–30°, 30–60° and 75–90°. The characteristic stresses increase as the flaw angle increases. The tensile cracks initiate from gentle flaws (α⩽30°) and shear cracks appear at tips of steep flaws (α⩾45°). The input energy, strain energy and dissipation energy of a specimen show approximate increasing trends as the flaw angle increases.
ISSN:0266-352X
1873-7633
DOI:10.1016/j.compgeo.2017.01.011