Evaluating cohesive models in discrete element simulation through drawdown test with new assessment perspectives

Huynh, TQ; Nguyen, TT; Indraratna, B

Evaluating cohesive models in discrete element simulation through drawdown test with new assessment perspectives

Huynh, TQ Nguyen, TT Indraratna, B

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Powder Technology, 2025, 452
Issue Date:: 2025-02-28

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Field	Value	Language
dc.contributor.author	Huynh, TQ
dc.contributor.author	Nguyen, TT
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.date.accessioned	2025-08-04T00:57:13Z
dc.date.available	2025-08-04T00:57:13Z
dc.date.issued	2025-02-28
dc.identifier.citation	Powder Technology, 2025, 452
dc.identifier.issn	0032-5910
dc.identifier.issn	1873-328X
dc.identifier.uri	http://hdl.handle.net/10453/189009
dc.description.abstract	This study explores the time-dependent and micro-to-macro behaviours of cohesive wet granules through discrete element simulation of a widely employed calibration procedure, i.e., drawdown test. Two distinct cohesive models, i.e., the Easo Liquid-Bridge (ELB) and simplified JKR (SJKR) are adopted. Their simulation results are not only validated with past experimental observations, but also compared with each other in multiple aspects. The results show substantial difference in time-dependent deformation and mass-volume change correlations characterised by the ELB and SJKR models, though they both show good agreement in bulk parameters with the experiment at final stage of drawdown test. Moreover, this study points out critical deviations in microscale features such as the contact network and porous structure that determines the macroscale responses under different concepts of cohesive contact. The results suggest new assessment parameters for modelling cohesive material and provide a deeper insight into the micro-to-macro understanding.
dc.language	English
dc.publisher	ELSEVIER
dc.relation	http://purl.org/au-research/grants/arc/DE230101127
dc.relation.ispartof	Powder Technology
dc.relation.isbasedon	10.1016/j.powtec.2024.120542
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0904 Chemical Engineering, 0913 Mechanical Engineering, 0914 Resources Engineering and Extractive Metallurgy
dc.subject.classification	Chemical Engineering
dc.subject.classification	4004 Chemical engineering
dc.subject.classification	4017 Mechanical engineering
dc.subject.classification	4019 Resources engineering and extractive metallurgy
dc.title	Evaluating cohesive models in discrete element simulation through drawdown test with new assessment perspectives
dc.type	Journal Article
utslib.citation.volume	452
utslib.for	0904 Chemical Engineering
utslib.for	0913 Mechanical Engineering
utslib.for	0914 Resources Engineering and Extractive Metallurgy
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
pubs.organisational-group	University of Technology Sydney/UTS Groups
pubs.organisational-group	University of Technology Sydney/UTS Groups/Transport Research Centre (TRC)
utslib.copyright.status	open_access	*
dc.rights.license	This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0). To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/
dc.date.updated	2025-08-04T00:57:07Z
pubs.publication-status	Published
pubs.volume	452

Abstract:

This study explores the time-dependent and micro-to-macro behaviours of cohesive wet granules through discrete element simulation of a widely employed calibration procedure, i.e., drawdown test. Two distinct cohesive models, i.e., the Easo Liquid-Bridge (ELB) and simplified JKR (SJKR) are adopted. Their simulation results are not only validated with past experimental observations, but also compared with each other in multiple aspects. The results show substantial difference in time-dependent deformation and mass-volume change correlations characterised by the ELB and SJKR models, though they both show good agreement in bulk parameters with the experiment at final stage of drawdown test. Moreover, this study points out critical deviations in microscale features such as the contact network and porous structure that determines the macroscale responses under different concepts of cohesive contact. The results suggest new assessment parameters for modelling cohesive material and provide a deeper insight into the micro-to-macro understanding.

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http://hdl.handle.net/10453/189009