Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Design Process of Light-weighted Fuel Cell Vehicle Body Frame

경량 연료전지 차체프레임 설계 프로세스

  • Kim, Ki-Tae (Graduate School of Automotive Engineering, Catholic University of Daegu) ;
  • Kang, Sung-Jong (Department of Mechanical & Automotive Engineering, Catholic University of Daegu)
  • 김기태 (대구가톨릭대학교 대학원 자동차공학과) ;
  • 강성종 (대구가톨릭대학교 기계자동차공학부)
  • Received : 2010.02.22
  • Accepted : 2010.05.17
  • Published : 2010.11.01
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Abstract

This paper presents a design process of light-weighted fuel cell vehicle (FCV) frame to meet design target of natural frequency in early design stage. At first, using validated FE model for the current design, thickness optimization was carried out. Next. optimization process, comprised of beam model size optimization, shell model design and shell model thickness optimization, was investigated for two frame types. In addition, in order to ensure hydrogen tanks safety against rear impact load, structural collapse characteristics was estimated for the rear frame model finally produced from the previous optimization process and, with the target of equal collapse characteristics to the current design model, structural modification with small weight increase was studied through static structural collapse analyses. The same attempt was applied to the front side frame. The results explain that the proposed process enables to design light-weighted frames with high structural performance in early stage.

Keywords

References

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