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Shock and Vibration
Volume 2015 (2015), Article ID 751890, 9 pages
http://dx.doi.org/10.1155/2015/751890
Research Article

Dynamic Modeling and Vibration Analysis for the Vehicles with Rigid Wheels Based on Wheel-Terrain Interaction Mechanics

1State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China
2School of Automotive Engineering, Harbin Institute of Technology, Weihai, Shandong 264209, China
3Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China

Received 31 August 2014; Revised 16 February 2015; Accepted 16 February 2015

Academic Editor: Sakdirat Kaewunruen

Copyright © 2015 Jianfeng Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The contact mechanics for a rigid wheel and deformable terrain are complicated owing to the rigid flexible coupling characteristics. Bekker’s equations are used as the basis to establish the equations of the sinking rolling wheel, to vertical load pressure relationship. Since vehicle movement on the Moon is a complex and on-going problem, the researcher is poised to simplify this problem of vertical loading of the wheel. In this paper, the quarter kinetic models of a manned lunar rover, which are both based on the rigid road and deformable lunar terrain, are used as the simulation models. With these kinetic models, the vibration simulations were conducted. The simulation results indicate that the quarter kinetic model based on the deformable lunar terrain accurately reflects the deformable terrain’s influence on the vibration characteristics of a manned lunar rover. Additionally, with the quarter kinetic model of the deformable terrain, the vibration simulations of a manned lunar rover were conducted, which include a parametric analysis of the wheel parameters, vehicle speed, and suspension parameters. The results show that a manned lunar rover requires a lower damping value and stiffness to achieve better vibration performance.