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Structural Design Optimization of Side/Rear Impact Guards Using a Coupled Genetic Algorithm Finite Element Method

[+] Author Affiliations
De-Shin Liu, Nan-Chun Lin

National Chung Cheng University

Chao-Chin Huang, Yin-Lee Meng

Automotive Research & Testing Center

Paper No. IMECE2004-62270, pp. 91-97; 7 pages
  • ASME 2004 International Mechanical Engineering Congress and Exposition
  • Transportation: Transportation and Environment
  • Anaheim, California, USA, November 13 – 19, 2004
  • Conference Sponsors: Transportation
  • ISBN: 0-7918-4722-5 | eISBN: 0-7918-4178-2, 0-7918-4179-0, 0-7918-4180-4
  • Copyright © 2004 by ASME


Underride protective structure can reduce serious injures when passenger cars collide with the rear end or side of the heavy vehicle. This paper describes the use of Genetic Algorithm (GA) coupled with a dynamic, inelastic and large deformation finite element (FE) code LS-DYNA to search optimal design of the Side/Rear impact guards. In order to verify the accuracy of the FE model, the simulation results were compared with real experiments follow with the regulation ECE R73. The validated FE model then used to study the optimal design base on under running distance and total amount of energy absorbing capacity. The results from this study shown that this newly developed method not only can found multi-objective design parameters but also can reduce computational time significantly.

Copyright © 2004 by ASME



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