PDF
Full
Outline
This research work aims to investigate the gravitational effect of intrusion dynamics in fluidized granular media under low−gravity environments, in order to support engineering applications such as lunar and asteroid exploration, simulation of low−gravity geological processes, and space powder processing technology. Through the drop tower experiment, the gravity−sensitive dependence law of the resistance and the penetration rate correlation when a cylinder moves uniformly through a granular bed was measured. In the 0−1g gravity environments provided by the variable gravity cabinet aboard the Chinese space station, a high−precision Hall sensor array was used to track the trajectory of a single magnetic ball in the vibrating fluidized granular medium. It was found that the resistance significantly increased with the moving speed under 0g conditions, while the rate correlation significantly weakened under 1g condition. Further experimental investigation on the space station revealed a significant dependence of the scaled damping coefficient and the hydrostatic pressure coefficient on gravity. These findings provide important evidence for the mechanics of granular media in asteroid exploration and lunar base construction, and deepen our understanding of particle separation (Brazil fruit effect) and the planetary formation process.
PDF
17
8
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
