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Development of High Stiffness Axle for a Race Vehicle

[+] Author Affiliations
Jin Ho Jung, Dong Min Lim, Jae Kil Lee, Seon Pyung Kim

Hyundai Motor Company, Hwaseong, Korea

Paper No. IMECE2013-64265, pp. V013T14A020; 7 pages
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 13: Transportation Systems
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5642-0
  • Copyright © 2013 by ASME


In rallies, it is required to develop the high stiffness and high strength suspension parts in order to maximize the handling performance and reliability to severe race condition. To determine which part we should focus on among the suspension parts in the development stage, it is required to consider the driving condition and the various rally road conditions.

First, it is necessary to increase the lateral stiffness and camber stiffness of suspension systems in order to maximize the handling and cornering performance. As the result of finite element (FE) analysis for production car suspension, it is verified that the stiffness of axle assembly affects mainly on the lateral stiffness of suspension system. Second, the shock loads under severe conditions such as landing after jump and bumpy road and the driving and braking torque are concentrated on the axle assembly. As the result of above consideration, developing the high stiffness and high strength axle has been considered as the most important work for the project of rally car suspension development.

For the development of new prototype car, hub and upright have been newly developed and new big bore wheel bearing has been selected in order to increase the stiffness of axle assembly. Newly developed suspension components have been installed in the new prototype car and 3 different test cars have been introduced to verify the effect of high stiffness axle.

Finally, Kinematic and Compliance (K&C) test result for these 3 test cars shows that the stiffness of axle assembly is the most significant parameter to increase the lateral stiffness of whole suspension system.

Copyright © 2013 by ASME
Topics: Vehicles , Stiffness



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