Granular contact dynamics with elastic bond model

Meng, J; Huang, J; Sheng, D; Sloan, SW

Granular contact dynamics with elastic bond model

Meng, J Huang, J Sheng, D

Sloan, SW

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Publisher:: Springer
Publication Type:: Journal Article
Citation:: Acta Geotechnica, 2017, 12, (3), pp. 479-493
Issue Date:: 2017-06-01

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Field	Value	Language
dc.contributor.author	Meng, J
dc.contributor.author	Huang, J
dc.contributor.author	Sheng, D https://orcid.org/0000-0002-1665-6931
dc.contributor.author	Sloan, SW
dc.date.accessioned	2022-08-26T00:42:42Z
dc.date.available	2022-08-26T00:42:42Z
dc.date.issued	2017-06-01
dc.identifier.citation	Acta Geotechnica, 2017, 12, (3), pp. 479-493
dc.identifier.issn	1861-1125
dc.identifier.issn	1861-1133
dc.identifier.uri	http://hdl.handle.net/10453/160885
dc.description.abstract	This paper proposes an elastic bond model in the framework of contact dynamics based on mathematic programming. The bond model developed in this paper can be used to model cemented materials. The formulation can be reduced to model pure static problems without introducing any artificial damping. In addition, omitting the elastic terms in the objective function turns the formulation into rigid bond model, which can be used for the modeling of rigid or stiffly bonded materials. The developed bond model has the advantage over the explicit DEM that large time step or displacement increment can be used. The tensile and shear strength criteria of the bond model are formulated based on the modified Mohr–Coulomb failure criterion. The torque transmission of bonds is introduced based on rolling resistance model. The loss of shear or tensile strength, or torque transmission will lead to the breakage of bonds, and turn the bond into purely frictional contact. Three simple examples are first used to validate the bond model. Numerical examples of uniaxial and biaxial compression tests are used to show its potential in modeling cemented geomaterials. Numerical results show that elastic bonds are indeed necessary for the modeling of cemented granular material under static conditions.
dc.language	English
dc.publisher	Springer
dc.relation.ispartof	Acta Geotechnica
dc.relation.isbasedon	10.1007/s11440-016-0481-5
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.title	Granular contact dynamics with elastic bond model
dc.type	Journal Article
utslib.citation.volume	12
utslib.for	0905 Civil 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	*
pubs.consider-herdc	false
dc.date.updated	2022-08-26T00:42:41Z
pubs.issue	3
pubs.publication-status	Published
pubs.volume	12
utslib.citation.issue	3

Abstract:

This paper proposes an elastic bond model in the framework of contact dynamics based on mathematic programming. The bond model developed in this paper can be used to model cemented materials. The formulation can be reduced to model pure static problems without introducing any artificial damping. In addition, omitting the elastic terms in the objective function turns the formulation into rigid bond model, which can be used for the modeling of rigid or stiffly bonded materials. The developed bond model has the advantage over the explicit DEM that large time step or displacement increment can be used. The tensile and shear strength criteria of the bond model are formulated based on the modified Mohr–Coulomb failure criterion. The torque transmission of bonds is introduced based on rolling resistance model. The loss of shear or tensile strength, or torque transmission will lead to the breakage of bonds, and turn the bond into purely frictional contact. Three simple examples are first used to validate the bond model. Numerical examples of uniaxial and biaxial compression tests are used to show its potential in modeling cemented geomaterials. Numerical results show that elastic bonds are indeed necessary for the modeling of cemented granular material under static conditions.

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http://hdl.handle.net/10453/160885