The Crush Energy Absorption Capacity Optimization for the Side-Member of an Aluminum Space Frame Vehicle

알루미늄 차체의 사이드멤버 충돌에너지 흡수성능 최적설계

  • 김정호 (국민대학교 자동차공학대학원) ;
  • 김범진 (국민대학교 자동차공학대학원) ;
  • 허승진 (국민대학교 기계ㆍ자동차공학부) ;
  • 김민수 (국민대학교 기계ㆍ자동차공학부)
  • Published : 2004.09.01

Abstract

In order to improve the frontal crash performance of an Aluminum Space Frame Vehicle, this presents a systematic optimal design process to maximize the crush energy absorption capacity of side-members while satisfying the maximum displacement constraint. In this study, five design types are studied for selecting a good collapse initiator. Then, for the selected collapse initiator type, 7 design variables are defined to represent cross section shape, thickness and bead interval. The systematic optimization processor, R-INOPL uses DOE, RSM and numerical optimization techniques. R-INOPL uses only 14 analyses to solve the 7 design variable optimization problem the final design can improve 103.9% of the internal energy and reduce 13.9% of the maximum displacement.

Keywords

References

  1. Proceeding of 8th Next Generation Vehicle Workshop The Development of Lightweight Body using Aluminum Space Frame H. Kang;J. M. Kim
  2. Proceeding of 9th Next Generation Vehicle Workshop Design and Analysis of the Crash Energy Absorbing Members for an Aluminum Intensive Vehicle(III) S. J. Heo;H. Y. Kim
  3. 2003 KSAE Spring Conference Proceedings v.II Robust Optimal Design of Aluminum Sidemember Crash Safety using RSM and 6-sigma Concept J. H. Kim;B. J. Kim;S. J. Heo;M. S. Kim
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  9. B-INOPL Version 3.0 : User's Guide for Constrained Nonlinear Optimization M. S. Kim