scholarly journals Numerical Study on Free Face-Assisted Rock Fragmentation Induced by a TBM Disk Cutter

2021 ◽  
Vol 861 (3) ◽  
pp. 032082
Author(s):  
Qi Geng ◽  
Min Ye ◽  
Zhiyong Lu ◽  
Xiaohui Liu ◽  
Xuebin Wang
Keyword(s):  
Numerical Study ◽  
Rock Fragmentation ◽  
Disk Cutter ◽  
Free Face

A numerical study of the impact of short delays on rock fragmentation

2017 ◽  
Vol 100 ◽  
pp. 250-254 ◽  
Author(s):  
Changping Yi ◽  
Jonny Sjöberg ◽  
Daniel Johansson ◽  
Nikolaos Petropoulos
Keyword(s):  
Numerical Study ◽  
Rock Fragmentation ◽  
The Impact

scholarly journals A numerical study of the influence from pre-existing cracks on granite rock fragmentation at percussive drilling

2014 ◽  
Vol 39 (5) ◽  
pp. 558-570 ◽  
Author(s):  
Mahdi Saadati ◽  
Pascal Forquin ◽  
Kenneth Weddfelt ◽  
Per-Lennart Larsson ◽  
Francois Hild
Keyword(s):  
Numerical Study ◽  
Rock Fragmentation ◽  
Percussive Drilling ◽  
Granite Rock

Numerical Study of the Rock Fragmentation by Three TBM Cutters

2012 ◽  
Vol 594-597 ◽  
pp. 3-7
Author(s):  
Yan Wang ◽  
Zheng Zhao Liang
Keyword(s):  
Numerical Study ◽  
Rock Breaking ◽  
Rock Fragmentation ◽  
Numerical Code ◽  
Time Interval ◽  
The Finite Element Method ◽  
Whole Process ◽  
Disc Cutters ◽  
Initiation And Propagation ◽  
Damage Theory

Based on the mesoscopic damage theory and the finite element method, a numerical code RFPA was applied to investigate the rock fragmentation by three TBM cutters loaded one after another in different time interval. The whole process of crack initiation and propagation was successfully simulated by the cutters loaded with different step intervals. The time interval of the disc cutters has significant influence on the fracture patterns and the rock breaking efficiency. The simulated results show that there are three types of breakage mode of the rock subjected to compression by the cutters.

Numerical study of the low-frequency atomic dynamics in a Lennard-Jones glass

1998 ◽  
Vol 77 (2) ◽  
pp. 473-484 ◽  
Author(s):  
M. Sampoli, P. Benassi, R. Dell'Anna,
Keyword(s):  
Numerical Study ◽  
Low Frequency ◽  
Lennard Jones
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