Contact models for the multi-sphere discrete element method

doi:10.1016/j.powtec.2022.118209

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Contact models for the multi-sphere discrete element method
	Berry, Nathan ; Zhang YH(张勇豪); Haeri, Sina
刊名	POWDER TECHNOLOGY
	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
内容类型	期刊论文
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.(Zhang Yonghao) Chinese Acad Sci Inst Mech State Key Lab High Temp Gas Dynam Beijing 100190 Peoples R China 2.(Berry Nathan, Haeri Sina) Univ Edinburgh Inst Mat & Proc Sch Engn Edinburgh EH9 3FB Scotland
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.