A stress-induced fractional dilatancy rule for clays

Li, HC; Ma, B; Zhang, S; Sheng, DC

A stress-induced fractional dilatancy rule for clays

Li, HC Ma, B Zhang, S Sheng, DC

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Publication Type:: Journal Article
Citation:: Gongcheng Lixue/Engineering Mechanics, 2020, 37, (11), pp. 108-116
Issue Date:: 2020-11-01

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Field	Value	Language
dc.contributor.author	Li, HC
dc.contributor.author	Ma, B
dc.contributor.author	Zhang, S
dc.contributor.author	Sheng, DC
dc.date.accessioned	2020-11-23T19:52:45Z
dc.date.available	2020-11-23T19:52:45Z
dc.date.issued	2020-11-01
dc.identifier.citation	Gongcheng Lixue/Engineering Mechanics, 2020, 37, (11), pp. 108-116
dc.identifier.issn	1000-4750
dc.identifier.uri	http://hdl.handle.net/10453/144263
dc.description.abstract	Copyright ©2020 Engineering Mechanics. All rights reserved. A fractional sub-loading surface model for clays is developed in the present study. The fractional plastic flow rule adopted in the proposed model is able to account for the non-normality of the flow direction with respect to the yield locus without introducing a plastic potential. Hence, a unified description of the associated and non-associated plastic flow rules is achieved. A stress-induced fractional dilatancy rule can be conveniently derived through the fractional plastic flow rule to consider the effect of the over-consolidation ratio on the dilatancy of clays. The analysis shows that increasing the over-consolidation ratio will reduce the dilatancy under a constant loading pressure. Compared with the modified Cam-clay model, the proposed model introduces only one extra dilatancy-related parameter and can describe the strain-softening and dilatancy features of over-consolidated clays. Model predictions show good agreement with the experimental results, indicating the capability of the proposed model in describing the behavior of clays.
dc.language	en
dc.relation.ispartof	Gongcheng Lixue/Engineering Mechanics
dc.relation.isbasedon	10.6052/j.issn.1000-4750.2019.12.0777
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0913 Mechanical Engineering
dc.subject.classification	Mechanical Engineering & Transports
dc.title	A stress-induced fractional dilatancy rule for clays
dc.type	Journal Article
utslib.citation.volume	37
utslib.for	0905 Civil Engineering
utslib.for	0913 Mechanical Engineering
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
utslib.copyright.status	closed_access	*
dc.date.updated	2020-11-23T19:52:31Z
pubs.issue	11
pubs.publication-status	Published
pubs.volume	37
utslib.citation.issue	11

Abstract:

Copyright ©2020 Engineering Mechanics. All rights reserved. A fractional sub-loading surface model for clays is developed in the present study. The fractional plastic flow rule adopted in the proposed model is able to account for the non-normality of the flow direction with respect to the yield locus without introducing a plastic potential. Hence, a unified description of the associated and non-associated plastic flow rules is achieved. A stress-induced fractional dilatancy rule can be conveniently derived through the fractional plastic flow rule to consider the effect of the over-consolidation ratio on the dilatancy of clays. The analysis shows that increasing the over-consolidation ratio will reduce the dilatancy under a constant loading pressure. Compared with the modified Cam-clay model, the proposed model introduces only one extra dilatancy-related parameter and can describe the strain-softening and dilatancy features of over-consolidated clays. Model predictions show good agreement with the experimental results, indicating the capability of the proposed model in describing the behavior of clays.

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http://hdl.handle.net/10453/144263