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A coupled isogeometric/multi-sphere discrete element approach for the contact interaction between irregular particles and structures

Wei Gao Orcid Logo, Yuntian Feng Orcid Logo, Chengyong Wang

Powder Technology, Volume: 430, Start page: 118971

Swansea University Author: Yuntian Feng Orcid Logo

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DOI (Published version): 10.1016/j.powtec.2023.118971

Abstract

An isogeometric/multi-sphere discrete-element coupling method is presented to model the contact or impact between structures and particles with complex shape. This coupling method takes advantages of the multi-sphere discrete element method for particles to provide the high computational efficiency...

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Published in: Powder Technology
ISSN: 0032-5910
Published: Elsevier BV 2023
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa64584
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Abstract: An isogeometric/multi-sphere discrete-element coupling method is presented to model the contact or impact between structures and particles with complex shape. This coupling method takes advantages of the multi-sphere discrete element method for particles to provide the high computational efficiency and excellent robustness of their contact modelling. The advantage of isogeometric analysis (IGA) for continuous solid material, e.g. the exact geometric description, is also taken to achieve a more accurate contact interaction with an excellent time continuity. In the coupling procedure, the CGRID method is used for the global searching. The exact contact situation of the discrete element and the IGA element surface is further determined in the local searching by solving non-linear equations numerically. Then, the normal contact force between a sphere and an IGA element is calculated using a penalty based Hertz-Mindlin contact model, and damping and friction forces are also considered. Both the accuracy and validity of the coupling method are examined by comparing the numerical results of an example with one particle impacting on a quarter of a cylinder, with those of the FEM model where the particle is modeled as a rigid body. Two additional examples involving particles impacting onto a corrugated plate and particles of different shapes impacting on a chute, are simulated to further assess the applicability and robustness of the proposed method.
Keywords: Isogeometric analysis, Multi-sphere particle, Coupling, Contact interaction, IGA/DEM
College: Faculty of Science and Engineering
Funders: The authors would like to express their gratitude for the financial support provided by the National Natural Science Foundation of China (NOs 51878184 and 12072217) and the research funding from Smart Medical Innovation Technology Center of Guangdong University of Technology (NO. ZYZX22026).
Start Page: 118971

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