Sphere discontinuous deformation analysis simulation of single-particle breakage of ballast based on voxelization and amplification by contact number

Tong, CX; Liu, HW; Huang, GH; Zhang, S

Sphere discontinuous deformation analysis simulation of single-particle breakage of ballast based on voxelization and amplification by contact number

Tong, CX Liu, HW Huang, GH Zhang, S

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Computers and Geotechnics, 2024, 176
Issue Date:: 2024-12-01

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Field	Value	Language
dc.contributor.author	Tong, CX
dc.contributor.author	Liu, HW
dc.contributor.author	Huang, GH
dc.contributor.author	Zhang, S
dc.date.accessioned	2025-01-09T04:33:16Z
dc.date.available	2025-01-09T04:33:16Z
dc.date.issued	2024-12-01
dc.identifier.citation	Computers and Geotechnics, 2024, 176
dc.identifier.issn	0266-352X
dc.identifier.issn	1873-7633
dc.identifier.uri	http://hdl.handle.net/10453/183160
dc.description.abstract	In this study, the sphere discontinuous deformation analysis (SDDA) method combined with the voxelization method and amplification by the contact number method are adopted for single-particle crushing modeling of ballast particles with realistic shapes. The effects of loading rate, particle reconstruction method, and particle placement on the crushing behaviour are discussed. The results verify that the proposed approach of a single-particle crushing model using amplification by contact number can more accurately simulate the crushing process of ballast particles in terms of displacement-load curve, and crack patterns. As the loading rate increases, the simulation changes from quasi-static loading to impact loading. In addition, the method of gradient descent is used to reach the minimum potential state of ballast, where particle rotation is skipped during the whole crushing process with less computing cost. This study provides an effective method for simulating single-particle breakage of ballast in the SDDA framework.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	Computers and Geotechnics
dc.relation.isbasedon	10.1016/j.compgeo.2024.106780
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0914 Resources Engineering and Extractive Metallurgy, 0915 Interdisciplinary Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4019 Resources engineering and extractive metallurgy
dc.title	Sphere discontinuous deformation analysis simulation of single-particle breakage of ballast based on voxelization and amplification by contact number
dc.type	Journal Article
utslib.citation.volume	176
utslib.for	0905 Civil Engineering
utslib.for	0914 Resources Engineering and Extractive Metallurgy
utslib.for	0915 Interdisciplinary Engineering
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	*
dc.date.updated	2025-01-09T04:33:13Z
pubs.publication-status	Published
pubs.volume	176

Abstract:

In this study, the sphere discontinuous deformation analysis (SDDA) method combined with the voxelization method and amplification by the contact number method are adopted for single-particle crushing modeling of ballast particles with realistic shapes. The effects of loading rate, particle reconstruction method, and particle placement on the crushing behaviour are discussed. The results verify that the proposed approach of a single-particle crushing model using amplification by contact number can more accurately simulate the crushing process of ballast particles in terms of displacement-load curve, and crack patterns. As the loading rate increases, the simulation changes from quasi-static loading to impact loading. In addition, the method of gradient descent is used to reach the minimum potential state of ballast, where particle rotation is skipped during the whole crushing process with less computing cost. This study provides an effective method for simulating single-particle breakage of ballast in the SDDA framework.

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http://hdl.handle.net/10453/183160