Thermoelastoplastic contact and charge characteristics of nonrotationally symmetric lunar dust particles
文献类型：期刊论文
| 作者 | Feng, Yulong2; Fang, Ruihan2; Li RJ(李仁杰)2 ; Li K(李凯)1; Cui, Yuhong2
|
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2025-02-28 |
| 卷号 | 452页码:17 |
| 关键词 | Lunar dust Nonspherical particles Thermoelastoplastic contact Particle charge Discrete element method |
| ISSN号 | 0032-5910 |
| DOI | 10.1016/j.powtec.2024.120599 |
| 通讯作者 | Li, Kai(likai@imech.ac.cn) ; Cui, Yuhong(yhcui@tju.edu.cn) |
| 英文摘要 | The thermoplastic contact and charge properties of lunar dust particles notably affect their mechanical properties, such as contact, collision, adhesion, transport, and wear properties. Contact forces and deformation of these particles are influenced by temperature differences between lunar dust particles and the surfaces of contact materials, caused by extreme temperature fluctuations on the lunar surface. Moreover, the geometric characteristics of particles affect their charge distribution and quantity. However, research on typical sharp lunar dust particles is limited. Herein, the thermoelastoplastic contact and charge characteristics of nonrotationally symmetric sharp lunar dust particles are investigated. Contact areas, thermal loads, indentation depths, and residual displacements during normal contact between lunar dust particles and an elastic-plastic half-space are determined at various temperature differences. In addition, expressions for the self-capacitance and charge quantity of lunar dust particles are proposed. Validity and accuracy of the developed model are verified via experimental data and numerical results. Furthermore, the effect of temperature differences on the contact forces, deformation, and dynamic characteristics of lunar dust particles is analyzed, and thermal load results are compared with the results obtained using other contact models. In addition, the variations in charge and charge-driven forces (e.g., Coulomb forces) with particle size are investigated. Overall, this study provides an important theoretical reference for utilizing in situ resources on the lunar surface. |
| 分类号 | 二类 |
| WOS关键词 | SOIL PARTICLES ; PLUME ; NANOINDENTATION ; PLASMAS ; VACUUM |
| 资助项目 | Opening project of CAS Key Laboratory of Microgravity[NML202309] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001398266300001 |
| 资助机构 | Opening project of CAS Key Laboratory of Microgravity |
| 其他责任者 | Li, Kai ; Cui, Yuhong |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/98207]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Tianjin Univ, Sch Mech Engn, Tianjin 300350, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Feng, Yulong,Fang, Ruihan,Li RJ,et al. Thermoelastoplastic contact and charge characteristics of nonrotationally symmetric lunar dust particles[J]. POWDER TECHNOLOGY,2025,452:17. |
| APA | Feng, Yulong,Fang, Ruihan,李仁杰,李凯,&Cui, Yuhong.(2025).Thermoelastoplastic contact and charge characteristics of nonrotationally symmetric lunar dust particles.POWDER TECHNOLOGY,452,17. |
| MLA | Feng, Yulong,et al."Thermoelastoplastic contact and charge characteristics of nonrotationally symmetric lunar dust particles".POWDER TECHNOLOGY 452(2025):17. |
入库方式： OAI收割
来源：力学研究所
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