Modelling Rock Failure with a Novel Continuous to Discontinuous Method

Gong, B; Wang, S; Sloan, SW; Sheng, D; Tang, C

Modelling Rock Failure with a Novel Continuous to Discontinuous Method

Gong, B Wang, S Sloan, SW Sheng, D

Tang, C

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Publication Type:: Journal Article
Citation:: Rock Mechanics and Rock Engineering, 2019, 52 (9), pp. 3183 - 3195
Issue Date:: 2019-09-01

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Field	Value	Language
dc.contributor.author	Gong, B	en_US
dc.contributor.author	Wang, S	en_US
dc.contributor.author	Sloan, SW	en_US
dc.contributor.author	Sheng, D https://orcid.org/0000-0002-1665-6931	en_US
dc.contributor.author	Tang, C	en_US
dc.date.issued	2019-09-01	en_US
dc.identifier.citation	Rock Mechanics and Rock Engineering, 2019, 52 (9), pp. 3183 - 3195	en_US
dc.identifier.issn	0723-2632	en_US
dc.identifier.uri	http://hdl.handle.net/10453/138714
dc.description.abstract	© 2019, Springer-Verlag GmbH Austria, part of Springer Nature. The original discontinuous deformation and displacement (DDD) method is greatly refined using the statistical damage theory and contact mechanics. Next, a novel coupled method is proposed to model the continuous to discontinuous failure process of rocks. By hybridizing the finite element method (FEM) and discontinuous deformation analysis (DDA) method, the proposed method inherits the advantages of both and is able to provide a complete and unified description of rock deformation, crack initiation and propagation, and rock body translation, rotation and interaction. Moreover, to improve the deformation results and refine the stress distribution within the model blocks, finite elements are introduced into the blocks. The ability of an intact block to fracture is included as well, i.e., the deformable blocks that contain several finite elements may split into smaller blocks if the strength criteria are satisfied continuously. The boundaries of damaged elements represent newly formed joints, and sliding and opening may occur along these joints, i.e., mechanical interaction is allowed between adjacent blocks. The correctness and validity of the proposed method are verified through a series of benchmark tests. The simulated results are consistent with the analytical solutions, previous studies and experimental observations. Overall, the coupled method is an effective and reliable approach for modelling the entire rock failure process with satisfactory accuracy and shows considerable potential in geotechnical engineering.	en_US
dc.relation.ispartof	Rock Mechanics and Rock Engineering	en_US
dc.relation.isbasedon	10.1007/s00603-019-01754-3	en_US
dc.subject.classification	Geological & Geomatics Engineering	en_US
dc.title	Modelling Rock Failure with a Novel Continuous to Discontinuous Method	en_US
dc.type	Journal Article
utslib.citation.volume	9	en_US
utslib.citation.volume	52	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0914 Resources Engineering and Extractive Metallurgy	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access
pubs.issue	9	en_US
pubs.publication-status	Published	en_US
pubs.volume	52	en_US

Abstract:

© 2019, Springer-Verlag GmbH Austria, part of Springer Nature. The original discontinuous deformation and displacement (DDD) method is greatly refined using the statistical damage theory and contact mechanics. Next, a novel coupled method is proposed to model the continuous to discontinuous failure process of rocks. By hybridizing the finite element method (FEM) and discontinuous deformation analysis (DDA) method, the proposed method inherits the advantages of both and is able to provide a complete and unified description of rock deformation, crack initiation and propagation, and rock body translation, rotation and interaction. Moreover, to improve the deformation results and refine the stress distribution within the model blocks, finite elements are introduced into the blocks. The ability of an intact block to fracture is included as well, i.e., the deformable blocks that contain several finite elements may split into smaller blocks if the strength criteria are satisfied continuously. The boundaries of damaged elements represent newly formed joints, and sliding and opening may occur along these joints, i.e., mechanical interaction is allowed between adjacent blocks. The correctness and validity of the proposed method are verified through a series of benchmark tests. The simulated results are consistent with the analytical solutions, previous studies and experimental observations. Overall, the coupled method is an effective and reliable approach for modelling the entire rock failure process with satisfactory accuracy and shows considerable potential in geotechnical engineering.

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http://hdl.handle.net/10453/138714