吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (02): 279-284.

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Analysis of lunar rover vibration characteristics based on rigid-flexible coupled model

WANG Xiao-lan, WANG Rong-ben   

  1. College of Transportation, Jilin University, Changchun 130022, China
  • Received:2011-04-06 Online:2012-03-01 Published:2012-03-01

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Abstract: In order to analyze the vibration characteristics of the lunar rover on the lunar surface environment, a rigid-flexible coupling dynamic model was built based on the 3-D modeling and the multi-body dynamics analysis software. A mathematical model was established for the lunar surface displacement power spectrum based on the NASA research. The lunar surface roughness was obtained using the harmonic superposition method. Taking the 6-wheeled lunar rover JLUIV-6 as research object, the reliability of the proposed model was validated by the typical obstacle crossing test. The vibration simulation under the excitation of the lunar surface roughness was performed using the proposed dynamic model, the vibration response of the rover body and the amplitude-frequency characteristic of the vibration acceleration were analyzed. The results showed that the lunar rover resonance frequency is within the interval of 0.8~1.8 Hz, thus provides a basis for the design and optimization of the lunar rover suspension.

Key words: vehicle engineering, lunar rover, vibration analysis, rigid-flexible coupling, lunar surface roughness

CLC Number: 

  • U495
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