Contact models for the multi-sphere discrete element method
文献类型：期刊论文
| 作者 | Berry, Nathan; Zhang YH(张勇豪); Haeri, Sina |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2023-02-15 |
| 卷号 | 416页码:118209 |
| 关键词 | Non-spherical particles Particle based methods Multi-Sphere Discrete Element Method DEM Clump Glued Sphere DEM Discrete Element Method Contact models MS-DEM contact models |
| ISSN号 | 0032-5910 |
| DOI | 10.1016/j.powtec.2022.118209 |
| 英文摘要 | Five sources of critical error are identified for binary interactions of particles using the Multi-Sphere Discrete Element Method (MS-DEM) i.e. the occurrence of under-damping, two forms of over-damping error, over -stiffness effects, and force response inconsistencies due to erroneous contact area calculations. Algorithmic issues are found to be the source of over-stiffness effects, one form of over-damping and the erroneous contact area calculations. The remaining over-damping and under-damping errors are physical in nature. By defining different types of MS-DEM interactions, solutions are proposed which can successfully mitigate all of the identified errors. This includes the development of the concept of a locally reduced mass to attenuate the physics-based form of over-damping, and purely algorithmic considerations rectify the other form of over -damping as well as the over-stiffness effects and erroneous contact area calculations. This study focuses on two types of linear spring dash-pot models and two non-linear Hertzian models, however, it is demonstrated the nature of the errors and their respective solutions are generally independent of the contact model. As such, the solutions proposed should be considered for implementation with other contact models when using the MS-DEM, with a high likelihood of being applicable to other contact detection methods. |
| 分类号 | 二类/Q1 |
| WOS研究方向 | WOS:000992372400001 |
| 语种 | 英语 |
| 资助机构 | UK Engineering and Physical Sciences Research Council (EPSRC) [EP/T009128/2] |
| 其他责任者 | Haeri, S |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/92223]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.(Berry Nathan, Haeri Sina) Univ Edinburgh Inst Mat & Proc Sch Engn Edinburgh EH9 3FB Scotland 2.(Zhang Yonghao) Chinese Acad Sci Inst Mech State Key Lab High Temp Gas Dynam Beijing 100190 Peoples R China |
| 推荐引用方式 GB/T 7714 | Berry, Nathan,Zhang YH,Haeri, Sina. Contact models for the multi-sphere discrete element method[J]. POWDER TECHNOLOGY,2023,416:118209. |
| APA | Berry, Nathan,张勇豪,&Haeri, Sina.(2023).Contact models for the multi-sphere discrete element method.POWDER TECHNOLOGY,416,118209. |
| MLA | Berry, Nathan,et al."Contact models for the multi-sphere discrete element method".POWDER TECHNOLOGY 416(2023):118209. |
入库方式： OAI收割
来源：力学研究所
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