File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Discrete-element method analysis of the state parameter

TitleDiscrete-element method analysis of the state parameter
Authors
Issue Date2014
PublisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.geotechnique-ice.com
Citation
Geotechnique, 2014, v. 64, p. 954-965 How to Cite?
AbstractUsing a series of true triaxial simulations, this study shows that the particulate discrete-element method (DEM) can capture the state-dependent drained and undrained response that is typical for sands. The most significant finding is that relationships between the initial state parameter and both the dilatancy at the peak strength and the difference between the peak and critical state strengths observed in the DEM simulations lie within the range defined by the experimental data. As indicated by the DEM data, this relationship is independent of loading path (intermediate principal stress ratio). The correlations between the initial state parameter and both the peak strength and the stress ratio at the undrained instability state are qualitatively in accordance with previously published laboratory data. The DEM data agree well with the NorSand constitutive model. The relationships between the state parameter and both structural anisotropy at the peak stress and the coordination number are explored. These findings extend current understanding of the capacity of DEM to capture the mechanical behaviour of granular materials and highlight the possibility of using DEM as a tool when developing advanced constitutive models.
Persistent Identifierhttp://hdl.handle.net/10722/202657
ISSN
2015 Impact Factor: 2.0
2015 SCImago Journal Rankings: 2.837

 

DC FieldValueLanguage
dc.contributor.authorHuang, X-
dc.contributor.authorO'Sullivan, C-
dc.contributor.authorHanley, KJ-
dc.contributor.authorKwok, CY-
dc.date.accessioned2014-09-19T09:14:12Z-
dc.date.available2014-09-19T09:14:12Z-
dc.date.issued2014-
dc.identifier.citationGeotechnique, 2014, v. 64, p. 954-965-
dc.identifier.issn0016-8505-
dc.identifier.urihttp://hdl.handle.net/10722/202657-
dc.description.abstractUsing a series of true triaxial simulations, this study shows that the particulate discrete-element method (DEM) can capture the state-dependent drained and undrained response that is typical for sands. The most significant finding is that relationships between the initial state parameter and both the dilatancy at the peak strength and the difference between the peak and critical state strengths observed in the DEM simulations lie within the range defined by the experimental data. As indicated by the DEM data, this relationship is independent of loading path (intermediate principal stress ratio). The correlations between the initial state parameter and both the peak strength and the stress ratio at the undrained instability state are qualitatively in accordance with previously published laboratory data. The DEM data agree well with the NorSand constitutive model. The relationships between the state parameter and both structural anisotropy at the peak stress and the coordination number are explored. These findings extend current understanding of the capacity of DEM to capture the mechanical behaviour of granular materials and highlight the possibility of using DEM as a tool when developing advanced constitutive models.-
dc.languageeng-
dc.publisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.geotechnique-ice.com-
dc.relation.ispartofGeotechnique-
dc.titleDiscrete-element method analysis of the state parameter-
dc.typeArticle-
dc.identifier.emailKwok, CY: fkwok8@hku.hk-
dc.identifier.authorityKwok, CY=rp01344-
dc.identifier.doi10.1680/geot.14.P.013-
dc.identifier.hkuros236150-
dc.identifier.volume64-
dc.identifier.spage954-
dc.identifier.epage965-
dc.publisher.placeUnited Kingdom-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats