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A generic energy‐conserving discrete element modeling strategy for concave particles represented by surface triangular meshes

Yuntian Feng Orcid Logo

International Journal for Numerical Methods in Engineering, Volume: 122, Issue: 10, Pages: 2581 - 2597

Swansea University Author: Yuntian Feng Orcid Logo

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DOI (Published version): 10.1002/nme.6633

Abstract

A generic energy-conserving linear normal contact model for concave particles in the discrete element method (DEM) is presented in the current paper. It is derived based on a recently enhanced general energy-conserving contact theory for arbitrarily shaped particles. A set of more effective evaluati...

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Published in: International Journal for Numerical Methods in Engineering
ISSN: 0029-5981 1097-0207
Published: Wiley 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56022
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first_indexed 2021-01-13T10:07:15Z
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spelling 2021-05-05T10:14:18.0763877 v2 56022 2021-01-13 A generic energy‐conserving discrete element modeling strategy for concave particles represented by surface triangular meshes d66794f9c1357969a5badf654f960275 0000-0002-6396-8698 Yuntian Feng Yuntian Feng true false 2021-01-13 CIVL A generic energy-conserving linear normal contact model for concave particles in the discrete element method (DEM) is presented in the current paper. It is derived based on a recently enhanced general energy-conserving contact theory for arbitrarily shaped particles. A set of more effective evaluation schemes required in the model are also given, which shows that only the intersection boundary between two contact shapes, instead of their contact region or surfaces, is required to be explicitly obtained, thereby substantially improving both efficiency and applicability of the proposed contact model over the previous version. A surface triangular mesh is used to represent any 3D concave particle. The computational issues associated with the contact of two surface triangulated 3D shapes, including the contact detection, the determination of intersection boundary segments, the computation of contact features and parallelisation, critical time step, and friction and damping treatment for multiple contacts are described in detail. Two sets of numerical examples involving various concave 3D shapes with a large number of surface triangles are presented to demonstrate either the superb energy-conserving property of the proposed model model, or its effectiveness, robustness and universal nature for wider and more complex problems. Journal Article International Journal for Numerical Methods in Engineering 122 10 2581 2597 Wiley 0029-5981 1097-0207 Concave shapes, Energy conservation, Linear normal contact model, Triangular mesh representation 30 5 2021 2021-05-30 10.1002/nme.6633 COLLEGE NANME Civil Engineering COLLEGE CODE CIVL Swansea University 2021-05-05T10:14:18.0763877 2021-01-13T09:58:38.3915784 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering Yuntian Feng 0000-0002-6396-8698 1 56022__19046__a2026b6073dd47cf9eb27d5731dea420.pdf 56022.pdf 2021-01-13T10:00:09.3240507 Output 25143224 application/pdf Accepted Manuscript true 2022-01-17T00:00:00.0000000 true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title A generic energy‐conserving discrete element modeling strategy for concave particles represented by surface triangular meshes
spellingShingle A generic energy‐conserving discrete element modeling strategy for concave particles represented by surface triangular meshes
Yuntian Feng
title_short A generic energy‐conserving discrete element modeling strategy for concave particles represented by surface triangular meshes
title_full A generic energy‐conserving discrete element modeling strategy for concave particles represented by surface triangular meshes
title_fullStr A generic energy‐conserving discrete element modeling strategy for concave particles represented by surface triangular meshes
title_full_unstemmed A generic energy‐conserving discrete element modeling strategy for concave particles represented by surface triangular meshes
title_sort A generic energy‐conserving discrete element modeling strategy for concave particles represented by surface triangular meshes
author_id_str_mv d66794f9c1357969a5badf654f960275
author_id_fullname_str_mv d66794f9c1357969a5badf654f960275_***_Yuntian Feng
author Yuntian Feng
author2 Yuntian Feng
format Journal article
container_title International Journal for Numerical Methods in Engineering
container_volume 122
container_issue 10
container_start_page 2581
publishDate 2021
institution Swansea University
issn 0029-5981
1097-0207
doi_str_mv 10.1002/nme.6633
publisher Wiley
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering
document_store_str 1
active_str 0
description A generic energy-conserving linear normal contact model for concave particles in the discrete element method (DEM) is presented in the current paper. It is derived based on a recently enhanced general energy-conserving contact theory for arbitrarily shaped particles. A set of more effective evaluation schemes required in the model are also given, which shows that only the intersection boundary between two contact shapes, instead of their contact region or surfaces, is required to be explicitly obtained, thereby substantially improving both efficiency and applicability of the proposed contact model over the previous version. A surface triangular mesh is used to represent any 3D concave particle. The computational issues associated with the contact of two surface triangulated 3D shapes, including the contact detection, the determination of intersection boundary segments, the computation of contact features and parallelisation, critical time step, and friction and damping treatment for multiple contacts are described in detail. Two sets of numerical examples involving various concave 3D shapes with a large number of surface triangles are presented to demonstrate either the superb energy-conserving property of the proposed model model, or its effectiveness, robustness and universal nature for wider and more complex problems.
published_date 2021-05-30T04:10:39Z
_version_ 1763753736689156096
score 11.037056

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