Journal article 496 views 36 downloads
On energy transfer and dissipation of intruder impacting granular materials based on discrete element simulations
,
Tingting Zhao,
Zhihua Wang
Powder Technology, Volume: 419, Start page: 118347
Swansea University Author:
Yuntian Feng
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DOI (Published version): 10.1016/j.powtec.2023.118347
Abstract
The impact process of a rigid intruder on granular materials can reveal some fundamental physical phenomena related to granular materials. Most existing investigations on impact problems of granular materials are mainly focused on the phenomenological description of the impact process without compre...
| Published in: | Powder Technology |
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| ISSN: | 0032-5910 |
| Published: |
Elsevier BV
2023
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa62678 |
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| Abstract: |
The impact process of a rigid intruder on granular materials can reveal some fundamental physical phenomena related to granular materials. Most existing investigations on impact problems of granular materials are mainly focused on the phenomenological description of the impact process without comprehensive understanding of energy dispersion of granular materials. In this paper, the discrete element method (DEM) is adopted to investigate the impact process of granular materials subject to an intruder. The kinetic and potential energy of the intruder is transferred to granular materials through the contact surface during impact. The granular material achieves dynamic equilibrium at the macroscopic level. The results reveal that the momentum transfer is typically radial at the collision point, indicating that the friction between particles and the intruder is not crucial. The shape and size of intruder significantly affects the energy transfer and the contact area between intruder and granular material. There is a quantitative relationship between the proportion of granular material involved in energy dissipation, the dissipation time and the energy transferred to the granular system, particularly when the granular system is sufficiently large. |
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| Keywords: |
Dynamic impact; Granular material; Intruder shape; Energy dissipation; Discrete element method |
| College: |
Faculty of Science and Engineering |
| Funders: |
This study is financially supported by the National Natural Science Foundation of China (Grant Nos.
12072217 and 12102294). |
| Start Page: |
118347 |