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Robust Design Optimization of a Tracked Vehicle System

[+] Author Affiliations
Min-Soo Kim, Jinhwan Choi, Soon-Geul Lee

Kyunghee University, Yongin, Gyeonggi, South Korea

In-Ho Song, Jun-Shik Yoon, SungHo Baek

FunctionBay, Inc., Seongnam, Gyeonggi, South Korea

Paper No. DETC2007-34713, pp. 559-563; 5 pages
doi:10.1115/DETC2007-34713
From:
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5: 6th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B, and C
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4806-X | eISBN: 0-7918-3806-4
  • Copyright © 2007 by ASME

abstract

This study presents the robust optimization for the dynamic responses of a heavy military tracked vehicle system. In this study, the tracked vehicle model has 954 degrees-of-freedom, which consists 189 bodies in total; 37 bodies for the chassis such as sprocket, road wheel, road arm, etc., 76 track link bodies for each track subsystem, 36 revolute joints and 152 bushing elements. The design objective is to minimize the maximum vertical acceleration of hull and its’ variance and satisfy the wheel travel constraints for torsion bars and the hydro-pneumatic suspension units within ±1σ ranges. In order to avoid the difficulty of design sensitivity analysis and overcome the numerical noise, a meta-model based optimization is employed. In this approach, first, the space filling methods and the classical DOE methods are used to generate sampling points. Second, the meta-models are constructed from the Kriging, RBF and RSM methods. Finally, a well-developed numerical optimizer sequentially solves the approximate optimization problem. In the numerical test, the robust optimization of the tracked vehicle system, having 11-random design variables, is solved in only 26 analyses.

Copyright © 2007 by ASME

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