NDLI: Modelling dilation in an idealised asphalt mixture using discrete element modelling

Content Provider	Springer Nature Link
Author	Collop, Andrew C. McDowell, Glenn R. Lee, York W.
Copyright Year	2006
Abstract	This paper investigates the use of discrete element modelling (DEM) to simulate the behaviour of a highly idealised bituminous mixture under uniaxial and triaxial compressive creep tests. The idealised mixture comprises single-sized spherical (sand-sized) particles mixed with bitumen and was chosen so that the packing characteristics are known (dense random packing) and the behaviour of the mixture will be dominated by the bitumen and complex aggregate interlock effects will be minimised. In this type of approach the effect of the bitumen is represented as shear and normal contact stiffnesses. A numerical sample preparation procedure has been developed to ensure that the final specimen is isotropic and has the correct volumetrics. Elastic contact properties have been used to investigate the effect of the shear and normal contact stiffnesses on bulk material properties. The bulk modulus was found to be linearly dependent on the normal contact stiffness and independent of the shear contact stiffness. Poisson’s ratio was found to be dependent on only the ratio of the shear contact stiffness to the normal contact stiffness. An elastic contact has been assumed for the compressive normal contact stiffness and a viscoelastic contact for shear and tensile normal contact stiffness to represent the contact behaviour in idealised mixture. The idealised mixture is found to dilate when the ratio of compressive to tensile contact stiffness increases as a function of loading time. Uniaxial and triaxial viscoelastic simulations have been performed to investigate the effect of stress ratio on the rate of dilation with shear strain for the sand asphalt. The numerical results have been validated with experimental data.
Starting Page	175
Ending Page	184
Page Count	10
File Format	PDF
ISSN	14345021
Journal	Granular Matter
Volume Number	8
Issue Number	3-4
e-ISSN	14347636
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-04-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Asphalt Elastic Viscoelastic Uniaxial Triaxial Creep Discrete element modelling Dilation Granular Media
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mechanics of Materials Materials Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Discrete element modelling of uniaxial constant strain rate tests on asphalt mixtures

Discrete element modelling of uniaxial constant strain rate tests on asphalt mixtures

High-temperature creep behavior characterization of asphalt mixture based on micromechanical modeling and virtual test

Discrete element modelling of scaled railway ballast under triaxial conditions

Discrete element modelling of cyclic loading of crushable aggreates

Two-dimensional discrete element modelling of bender element tests on an idealised granular material

Critical state behaviour of granular materials from isotropic and rebounded paths: DEM simulations

Influence of relative density on granular materials behavior: DEM simulations of triaxial tests

Discrete element modelling of scaled railway ballast under triaxial conditions

Modelling dilation in an idealised asphalt mixture using discrete element modelling

Similar Documents

Discrete element modelling of uniaxial constant strain rate tests on asphalt mixtures

Discrete element modelling of uniaxial constant strain rate tests on asphalt mixtures

High-temperature creep behavior characterization of asphalt mixture based on micromechanical modeling and virtual test

Discrete element modelling of scaled railway ballast under triaxial conditions

Discrete element modelling of cyclic loading of crushable aggreates

Two-dimensional discrete element modelling of bender element tests on an idealised granular material

Critical state behaviour of granular materials from isotropic and rebounded paths: DEM simulations

Influence of relative density on granular materials behavior: DEM simulations of triaxial tests

Discrete element modelling of scaled railway ballast under triaxial conditions

Modelling dilation in an idealised asphalt mixture using discrete element modelling