scholarly journals Particle flow simulation study on uniaxial compression of coal sample with prefabricated fracture

2021 ◽  
Vol 859 (1) ◽  
pp. 012069
Author(s):  
Kangwu Feng ◽  
Huayi Deng ◽  
Chen Sun
Keyword(s):  
Uniaxial Compression ◽  
Simulation Study ◽  
Coal Sample ◽  
Flow Simulation ◽  
Particle Flow ◽  
Particle Flow Simulation

Particle Flow Simulation of Rock Uniaxial Compression Process

2011 ◽  
Vol 90-93 ◽  
pp. 497-500
Author(s):  
Yan Chun Yin ◽  
Tong Bin Zhao ◽  
Yun Liang Tan ◽  
Chuan Wei Zang
Keyword(s):  
Uniaxial Compression ◽  
Flow Simulation ◽  
Uniaxial Compression Test ◽  
Compression Process ◽  
Deformation Localization ◽  
Indirect Tension ◽  
Engineering Significance ◽  
Scientific Significance ◽  
Softening Stage ◽  
Particle Flow Simulation

The research of rock deformation and breaking has important scientific significance and engineering significance. Deformation is a long process, while the breaking happens in a monent relatively. In this paper the rock uniaxial compression test was simulated by using PFC2D. The complete curve of stress-strain was devided into six stages: compaction stage, elastic deformation stage, plastic sclerosis stage, plastic softening stage, breaking stage and breaking residual stage. It was found that the deformation localization generated the formation and extension of the cracks. When there were enough cracks, the specimen began to damage. Only a few crack bands evolved to breaking bands. The specimen’s breaking was mainly caused by indirect tension, supplemented by shear.

Sign in / Sign up

Export Citation Format

Share Document