Gear Stress Analysis and Discrete Optimization for Wheel-Legged Rover

Abstract:

The wheel-legged rover with a double-half-revolution mechanism uses two tandem planetary gear trains to drive. Its virtual prototype model was built in COSMOS Motion software, and the mechanical data of each gears of the wheel-legged rover were obtained by dynamic simulation under the typical working conditions. On this basis, the finite element analysis model of the wheel-leg planetary gear was established and its stress analysis was done. The discrete optimization mathematical model was built with the optimization target of minimizing the rover’s wheel-leg planetary gear volume and the constraint condition of keeping the Mises stress applied on the dedendum under the admissible Mises stress. Based on ANSYS Parametric Design Language (APDL), the optimization design was done for the above gear based on discrete optimization method. The result shows that the optimized gear not only meets the strength requirement, but also its weight is 58% lower than the original, which will provide a new effective method for optimizing the wheel-leg structure of the rover.

• Periodical: Advanced Materials Research (Volumes 479-481)
• Pages: 2511-2516
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.479-481.2511
• Online since: February 2012
• Authors: Hong Bing Huang, Yong Ming Wang, Tong Hua Fan
• Keywords: ANSYS, Discrete Optimization, Rover, Spur Cylindrical Gear, Stress Analysis

References

[1] Yongming Wang, Xiaoliu Yu, Wencheng Tang, A new-type wheel-legged lunar rover and its mobile performance analysis, 2009 International Conference on Mechanical and Electrical Technology, ASME Press, New York, USA, 2009, pp.31-36.

DOI: 10.1115/1.802946.paper6

[2] Yongming Wang, Xiaoliu Yu, Ronghai Chi, Wencheng Tang. Obstacle-climbing Performance Simulation Analysis of Wheel-legged Rover. 2010 The 2nd International Conference on Computer Engineering and Technology, VOL.1,16-18 April 2010, Chengdu, China,pp.74-79.

DOI: 10.1109/iccet.2010.5486293

[3] Yuxin Wang, Yang Liu, Yiming Wang, et al, Finite element analysis for tooth root stress of involute spur gear, Journal of Machine Design, Vol.18, 2001, (8), pp.21-24.（in Chinese）

[4] Liang Wang, Zhanxu Wang, Mei Yang, Finite element analysis for involute spur gear based on ANSYS and its improved method, Journal of Modern Manufacturing Engineering, 2008 (4), pp.66-68. （in Chinese）

[5] Guojie Zhao, Yunguo Gao, Guangyu Han, Optimum design of cylinder helix compression spring using gridding method, Mechanical Science and Technology, Vol.24, 2005 (10), pp.1166-1168. （in Chinese）

[6] Wei Chen, Fei He, WeiDong Wen, Finite element analysis method based on structural parametric design, Journal of Mechanical Science and Technology for Aerospace Engineering, Vol.22, 2003, (6), pp.948-950. （in Chinese）