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Article: Numerical study of one-dimensional compression in granular materials

TitleNumerical study of one-dimensional compression in granular materials
Authors
Issue Date2015
Citation
Géotechnique Letters, 2015, v. 5, p. 96-103 How to Cite?
AbstractThe discrete element method has been employed to simulate vertical one-dimensional compression of an idealised soil. Direct measurement of the full stress tensor was possible and the results show that K0 (the ratio of horizontal to vertical effective stresses) increases with void ratio, which is consistent with previous experimental studies. The anisotropic fabric induced during compression was quantified by considering the orientations and magnitudes of the normal contact forces. For the denser samples there was a definite bias towards more vertically oriented contacts, resulting in lower stresses being transmitted in the horizontal direction for a given vertical stress. In contrast, the contacts were oriented more isotropically in the looser samples, allowing more similar stresses to be transmitted in the horizontal and vertical directions.
Persistent Identifierhttp://hdl.handle.net/10722/215192

 

DC FieldValueLanguage
dc.contributor.authorLOPERA PEREZ, JC-
dc.contributor.authorKwok, CY-
dc.contributor.authorO'Sullivan, C-
dc.contributor.authorHUANG, X-
dc.contributor.authorHanley, K-
dc.date.accessioned2015-08-21T13:17:36Z-
dc.date.available2015-08-21T13:17:36Z-
dc.date.issued2015-
dc.identifier.citationGéotechnique Letters, 2015, v. 5, p. 96-103-
dc.identifier.urihttp://hdl.handle.net/10722/215192-
dc.description.abstractThe discrete element method has been employed to simulate vertical one-dimensional compression of an idealised soil. Direct measurement of the full stress tensor was possible and the results show that K0 (the ratio of horizontal to vertical effective stresses) increases with void ratio, which is consistent with previous experimental studies. The anisotropic fabric induced during compression was quantified by considering the orientations and magnitudes of the normal contact forces. For the denser samples there was a definite bias towards more vertically oriented contacts, resulting in lower stresses being transmitted in the horizontal direction for a given vertical stress. In contrast, the contacts were oriented more isotropically in the looser samples, allowing more similar stresses to be transmitted in the horizontal and vertical directions.-
dc.languageeng-
dc.relation.ispartofGéotechnique Letters-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPermission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees-
dc.titleNumerical study of one-dimensional compression in granular materials-
dc.typeArticle-
dc.identifier.emailKwok, CY: fkwok8@hku.hk-
dc.identifier.authorityKwok, CY=rp01344-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1680/jgele.14.00107-
dc.identifier.hkuros248470-
dc.identifier.volume5-
dc.identifier.spage96-
dc.identifier.epage103-

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