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月壤颗粒间的范德华力作用研究进展
Review on van der Waals Interaction between Lunar Soil Particles
【摘要】 当前中国嫦娥工程“绕、落、回”三期任务已经圆满完成,为保持中国月球探测技术的领先地位,对月壤的力学特性进行研究具有重要意义。月表所处环境高真空、低重力和强辐射等特点使月壤表现出不同于地面砂土的性质,导致这一现象最主要的原因之一是月壤颗粒间的范德华力作用。本文对当前有关范德华力的研究进行总结,分别从分子/原子间的范德华力计算、范德华力的迟滞性、理想条件下宏观物体间的范德华力计算和真实条件下范德华力的计算四个方面对目前已有的研究进行分析,给出当前宏观颗粒间范德华力研究的不足,为今后月壤颗粒间范德华力的进一步研究提供参考。
【Abstract】 With the successful completion of the three-phase tasks of “orbiting”, “landing” and “returning” of China’s Chang’E project, it is of great significance to study the mechanical properties of lunar soil, which is the most fundamental requirement for the lunar basement construction and other lunar engineering projects. The characteristics of high vacuum, low gravity, and strong radiation in the environment of the lunar surface make the lunar regolith different from the terrestrial sands. One of the main differences between lunar regolith and terrestrial sands is that lunar regolith is slightly cohesive,while terrestrial sands are usually non-cohesive. This difference can be attributed to the van der Waals interaction between lunar soil particles. This paper summarizes the current research on van der Waals force, and analyzes the existing research from four aspects: the calculation of van der Waals force between molecules/atoms, the retardation of van der Waals force in long-range, the calculation of van der Waals force between macro bodies under ideal hypothesis conditions and the calculation of van der Waals force under realistic conditions. At last, shortcomings of the current research on van der Waals force between macro bodies are given. The purpose of this paper is to provide a relatively thorough and theoretical reference for the further study of van der Waals force between lunar soil particles.
【Key words】 van der Waals force; Casimir force; Surface energy; Lunar soil;
- 【文献出处】 空间科学学报 ,Chinese Journal of Space Science , 编辑部邮箱 ,2023年02期
- 【分类号】P184.5;V476.3
- 【下载频次】61