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Numerical simulation of the rock fragmentation process induced by two drill bits subjected to static and dynamic (impact) loading
Citation
Wang, SY and Sloan, SW and Liu, H and Tang, CA, Numerical simulation of the rock fragmentation process induced by two drill bits subjected to static and dynamic (impact) loading, Rock Mechanics and Rock Engineering, 44, (3) pp. 317-332. ISSN 0723-2632 (2011) [Refereed Article]
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Copyright Statement
Copyright 2010 Springer-Verlag
DOI: doi:10.1007/s00603-010-0123-4
Abstract
Rock fragmentation processes induced by
double drill bits subjected to static and dynamic loading are
examined by a numerical method. Micro-heterogeneities of
the rock are taken into account in this numerical model.
For the static case, the simulated results reproduce the
progressive process of brittle rock fragmentation during
indentation. For the dynamic case, numerical simulations
represent radial cracks, incipient chips, pulverized zones,
and shell cracks. Comparing the static and dynamic cases,
the dynamic loading can lead to rock fragmentation more
efficiently. In addition, numerical results indicate that the
dynamic pressure (Pmax) plays an important role in the
failure process of specimens with two indenters. Furthermore,
the heterogeneity of the rock can also affect the
failure modes of the rock when two indenters are used.
Finally, the numerical results demonstrate the effect of the
spacing between the indenters on the rock.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | Rock fragmentation Numerical simulation |
Research Division: | Engineering |
Research Group: | Civil engineering |
Research Field: | Civil geotechnical engineering |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in engineering |
UTAS Author: | Liu, H (Dr Hong Liu) |
ID Code: | 76204 |
Year Published: | 2011 |
Web of Science® Times Cited: | 71 |
Deposited By: | Engineering |
Deposited On: | 2012-03-01 |
Last Modified: | 2015-02-08 |
Downloads: | 2 View Download Statistics |
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