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ZOU Meng, LIU Guo-min, LI Jian-qiao, ZHANG Jin-huan, LI Yin-wu. Microscopic study on dynamic behavior of lunar regolith under driving wheel in microgravity circumstance[J]. Journal of Traffic and Transportation Engineering, 2009, 9(6): 21-25. doi: 10.19818/j.cnki.1671-1637.2009.06.005
Citation: ZOU Meng, LIU Guo-min, LI Jian-qiao, ZHANG Jin-huan, LI Yin-wu. Microscopic study on dynamic behavior of lunar regolith under driving wheel in microgravity circumstance[J]. Journal of Traffic and Transportation Engineering, 2009, 9(6): 21-25. doi: 10.19818/j.cnki.1671-1637.2009.06.005
shu

Microscopic study on dynamic behavior of lunar regolith under driving wheel in microgravity circumstance

doi: 10.19818/j.cnki.1671-1637.2009.06.005
  • 1.

    State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China

  • 2.

    Key Laboratory for Bionic Engineering of Ministry of Education, Jilin University, Changchun 130025, Jilin, China

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  • Author Bio:

    ZOU Meng (1978-)‚male‚assistant researcher‚PhD‚+86-10-62781639-15‚zoumeng@tsinghua.edu.cn

  • Received Date: 2009-07-20
  • Publish Date: 2009-12-25
    Abstract
  • That rigid wheel passed lunar regolith was simulated by discrete element method(DEM), 5 typical particles and a area with a radius of 5 cm were elected, and the particle tracks, speed distributions and the dynamic process of the porosity ratio of lunar regolith under driving wheel in microgravity circumstance were analyzed.The result shows that the tracks can be separated into push, press and rebound parts when lunar regolith particles are under smooth wheel.They can be separated into two kinds when lunar regolith particles are under lug-wheel.When the particles are outside the circularity, the tracks are similar to that under smooth wheel.When the particles are inside the circularity, the tracks can be separated into press, toss and drop parts.Lunar regolith under driving wheel has ahead and retral floating areas when the slip ratio is between 0 to 100%.The porosity ratio of lunar regolith descends when the wheel passing, and then it has some rebound after the wheel passing, but as a whole it is less than that before the passage.

     

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    • References(11)
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