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Using a deformable discrete-element technique to model the compaction behaviour of mixed ductile and brittle particulate systems / Rajesh Ransing, Roland W. Lewis, David Gethin

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Volume: 362, Issue: 1822, Pages: 1867 - 1884

Swansea University Authors: Rajesh Ransing, David Gethin

DOI (Published version): 10.1098/rsta.2004.1421

Abstract

This paper illustrates the application of a combined discrete- and finite-element simulation to the compaction of assemblies comprising both ductile and brittle particles. Through case studies, the results demonstrate the importance of using a fine mesh on the particle boundary, the effect of fragme...

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Published in: PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
Published: 2004
URI: https://cronfa.swan.ac.uk/Record/cronfa1963
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spelling 2015-11-24T14:53:20.5887196 v2 1963 2011-10-01 Using a deformable discrete-element technique to model the compaction behaviour of mixed ductile and brittle particulate systems 0136f9a20abec3819b54088d9647c39f 0000-0003-4848-4545 Rajesh Ransing Rajesh Ransing true false 20b93675a5457203ae87ebc32bd6d155 0000-0002-7142-8253 David Gethin David Gethin true false 2011-10-01 MECH This paper illustrates the application of a combined discrete- and finite-element simulation to the compaction of assemblies comprising both ductile and brittle particles. Through case studies, the results demonstrate the importance of using a fine mesh on the particle boundary, the effect of fragmentation and its impact on the form of the compression curve, and the effect of inclusion of ductile particles at ca. 25% by volume suppressing brittle failure mechanisms. Although, the calculations can be extended to three dimensions, the computational cost is a current limitation on such calculations. The novelty of this approach is in its ability to predict material yield surfaces for the compaction of a mixture of particles. The initial results are optimistic, but there is a need for model improvement, principally through the ability to capture the random packing of irregular particles since this will eliminate a key problem in defining an initial density for the simulation. The main advantage of this technology is in its ability to minimize the need for expensive triaxial testing of samples to develop the yield-surface history. Journal Article PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 362 1822 1867 1884 discrete-element method; finite-element method; ductile and brittle particles; compaction; yield surfaces, powder compaction 31 12 2004 2004-12-31 10.1098/rsta.2004.1421 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2015-11-24T14:53:20.5887196 2011-10-01T00:00:00.0000000 College of Engineering Engineering Rajesh Ransing 0000-0003-4848-4545 1 Roland W. Lewis 2 David Gethin 0000-0002-7142-8253 3 0001963-24112015145301.pdf Using_a_deformable_discrete-element_technique_to_model_the_compaction_behaviour_of_mixed_ductile_and_brittle_particulate_systems.pdf 2015-11-24T14:53:01.5400000 Output 1055019 application/pdf Accepted Manuscript true 2015-11-24T14:53:01.0000000 false
title Using a deformable discrete-element technique to model the compaction behaviour of mixed ductile and brittle particulate systems
spellingShingle Using a deformable discrete-element technique to model the compaction behaviour of mixed ductile and brittle particulate systems
Rajesh, Ransing
David, Gethin
title_short Using a deformable discrete-element technique to model the compaction behaviour of mixed ductile and brittle particulate systems
title_full Using a deformable discrete-element technique to model the compaction behaviour of mixed ductile and brittle particulate systems
title_fullStr Using a deformable discrete-element technique to model the compaction behaviour of mixed ductile and brittle particulate systems
title_full_unstemmed Using a deformable discrete-element technique to model the compaction behaviour of mixed ductile and brittle particulate systems
title_sort Using a deformable discrete-element technique to model the compaction behaviour of mixed ductile and brittle particulate systems
author_id_str_mv 0136f9a20abec3819b54088d9647c39f
20b93675a5457203ae87ebc32bd6d155
author_id_fullname_str_mv 0136f9a20abec3819b54088d9647c39f_***_Rajesh, Ransing
20b93675a5457203ae87ebc32bd6d155_***_David, Gethin
author Rajesh, Ransing
David, Gethin
author2 Rajesh Ransing
Roland W. Lewis
David Gethin
format Journal article
container_title PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
container_volume 362
container_issue 1822
container_start_page 1867
publishDate 2004
institution Swansea University
doi_str_mv 10.1098/rsta.2004.1421
college_str College of Engineering
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hierarchy_parent_title College of Engineering
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description This paper illustrates the application of a combined discrete- and finite-element simulation to the compaction of assemblies comprising both ductile and brittle particles. Through case studies, the results demonstrate the importance of using a fine mesh on the particle boundary, the effect of fragmentation and its impact on the form of the compression curve, and the effect of inclusion of ductile particles at ca. 25% by volume suppressing brittle failure mechanisms. Although, the calculations can be extended to three dimensions, the computational cost is a current limitation on such calculations. The novelty of this approach is in its ability to predict material yield surfaces for the compaction of a mixture of particles. The initial results are optimistic, but there is a need for model improvement, principally through the ability to capture the random packing of irregular particles since this will eliminate a key problem in defining an initial density for the simulation. The main advantage of this technology is in its ability to minimize the need for expensive triaxial testing of samples to develop the yield-surface history.
published_date 2004-12-31T03:14:53Z
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