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Discrete Element Modelling of Dynamic Behaviour of Rockfills for Resisting High Speed Projectile Penetration

Tingting Zhao, Yuntian Feng Orcid Logo, Jie Zhang, Zhihua Wang, Zhiyong Wang

Computer Modeling in Engineering & Sciences, Volume: 127, Issue: 2, Pages: 721 - 735

Swansea University Author: Yuntian Feng Orcid Logo

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Abstract

This paper presents a convex polyhedral based discrete element method for modelling the dynamic behaviour of rockfills for resisting high speed projectile penetration. The contact between two convex polyhedra is defined by the Minkowski overlap and determined by the GJK and EPA algorithm. The contac...

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Published in: Computer Modeling in Engineering & Sciences
ISSN: 1526-1506
Published: Computers, Materials and Continua (Tech Science Press) 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56836
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spelling 2021-05-26T13:24:08.0285770 v2 56836 2021-05-10 Discrete Element Modelling of Dynamic Behaviour of Rockfills for Resisting High Speed Projectile Penetration d66794f9c1357969a5badf654f960275 0000-0002-6396-8698 Yuntian Feng Yuntian Feng true false 2021-05-10 CIVL This paper presents a convex polyhedral based discrete element method for modelling the dynamic behaviour of rockfills for resisting high speed projectile penetration. The contact between two convex polyhedra is defined by the Minkowski overlap and determined by the GJK and EPA algorithm. The contact force is calculated by a Minkowski overlap based normal model. The rotational motion of polyhedral particles is solved by employing a quaternion based orientation representation scheme. The energy-conserving nature of the polyhedral DEM method ensures a robust and effective modelling of convex particle systems. The method is applied to simulate the dynamic behaviour of a rockfill system under impact of a high speed projectile. The rockfill sample is generated by a three-dimensional Voronoi meso method with a specific particle size distribution. The penetrating process of the projectile striking the rockfill target is simulated. Some physical quantities associated with the projectile such as the residual velocity, penetration resistance, and deflection angle are monitored which can reflect the influence of the characteristics of the rockfill target on its anti-penetration performance. It can be concluded that the developed polyhedral DEM method is a very promising numerical approach in analysing the dynamic behaviour of rockfill systems subject to high speed projectile impact. Journal Article Computer Modeling in Engineering & Sciences 127 2 721 735 Computers, Materials and Continua (Tech Science Press) 1526-1506 Discrete element method; minkowski overlap; polyhedral particles; rockfill protection system; high speed projectile penetration 19 4 2021 2021-04-19 10.32604/cmes.2021.015913 COLLEGE NANME Civil Engineering COLLEGE CODE CIVL Swansea University 2021-05-26T13:24:08.0285770 2021-05-10T10:05:52.6470208 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering Tingting Zhao 1 Yuntian Feng 0000-0002-6396-8698 2 Jie Zhang 3 Zhihua Wang 4 Zhiyong Wang 5 56836__19831__271d8c8f02bd420c858d945f25765701.pdf 56836.pdf 2021-05-10T10:07:22.7017899 Output 1174148 application/pdf Version of Record true This work is licensed under a Creative Commons Attribution 4.0 International License true eng http://creativecommons.org/licenses/by/4.0/
title Discrete Element Modelling of Dynamic Behaviour of Rockfills for Resisting High Speed Projectile Penetration
spellingShingle Discrete Element Modelling of Dynamic Behaviour of Rockfills for Resisting High Speed Projectile Penetration
Yuntian Feng
title_short Discrete Element Modelling of Dynamic Behaviour of Rockfills for Resisting High Speed Projectile Penetration
title_full Discrete Element Modelling of Dynamic Behaviour of Rockfills for Resisting High Speed Projectile Penetration
title_fullStr Discrete Element Modelling of Dynamic Behaviour of Rockfills for Resisting High Speed Projectile Penetration
title_full_unstemmed Discrete Element Modelling of Dynamic Behaviour of Rockfills for Resisting High Speed Projectile Penetration
title_sort Discrete Element Modelling of Dynamic Behaviour of Rockfills for Resisting High Speed Projectile Penetration
author_id_str_mv d66794f9c1357969a5badf654f960275
author_id_fullname_str_mv d66794f9c1357969a5badf654f960275_***_Yuntian Feng
author Yuntian Feng
author2 Tingting Zhao
Yuntian Feng
Jie Zhang
Zhihua Wang
Zhiyong Wang
format Journal article
container_title Computer Modeling in Engineering & Sciences
container_volume 127
container_issue 2
container_start_page 721
publishDate 2021
institution Swansea University
issn 1526-1506
doi_str_mv 10.32604/cmes.2021.015913
publisher Computers, Materials and Continua (Tech Science Press)
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 This paper presents a convex polyhedral based discrete element method for modelling the dynamic behaviour of rockfills for resisting high speed projectile penetration. The contact between two convex polyhedra is defined by the Minkowski overlap and determined by the GJK and EPA algorithm. The contact force is calculated by a Minkowski overlap based normal model. The rotational motion of polyhedral particles is solved by employing a quaternion based orientation representation scheme. The energy-conserving nature of the polyhedral DEM method ensures a robust and effective modelling of convex particle systems. The method is applied to simulate the dynamic behaviour of a rockfill system under impact of a high speed projectile. The rockfill sample is generated by a three-dimensional Voronoi meso method with a specific particle size distribution. The penetrating process of the projectile striking the rockfill target is simulated. Some physical quantities associated with the projectile such as the residual velocity, penetration resistance, and deflection angle are monitored which can reflect the influence of the characteristics of the rockfill target on its anti-penetration performance. It can be concluded that the developed polyhedral DEM method is a very promising numerical approach in analysing the dynamic behaviour of rockfill systems subject to high speed projectile impact.
published_date 2021-04-19T04:08:28Z
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