Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Stiffness and Fatigue Strength Analysis of Fuel Cell Vehicle Body Frame

연료전지차량 차체프레임 강성 및 내구해석

  • Choi, Bok-Lok (Department of Mechanical & Automotive Engineering, Gangneung-Wonju National University) ;
  • Kang, Sung-Jong (Department of Mechanical & Automotive Engineering, Catholic University of Daegu)
  • 최복록 (강릉원주대학교 기계자동차공학부) ;
  • 강성종 (대구가톨릭대학교 기계자동차공학부)
  • Received : 2010.07.23
  • Accepted : 2011.02.14
  • Published : 2011.07.01
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Abstract

Firstly, FEM model for the body frame of a fuel cell vehicle was built up and design optimization results based on different schemes were exhibited. One scheme was to minimize weight while maintaining the normal mode frequencies and the other was to increase the frequencies without weight change. Next, for a rear frame model, shape parameter study on collapse characteristics such as peak resistance load and absorbed energy was carried out. Also, the stiffness of frame mounting brackets was predicted using inertance calculation and the durability of those mounting brackets for vehicle system loads was evaluated. Finally, for a representative mounting model, the influence on durability due to thickness change was analyzed.

Keywords

References

  1. S. J. Kang and B. L. Choi, "Body Structure Optimization of Fuel Cell Vehicle: The 2nd," Proceedings of Automotive Technology Workshop, KATECH, 2008.
  2. Optistruct User's Manual, Ver.8.0, Altair Engineering Inc. 2006.
  3. T. H. Lee and S. G. Shin, "Analysis of Buckling Characteristics for Hat Section Member Using Structural Foam and Plastic Reinforcement," Transactions of KSAE, Vol.16, No.2, pp.114-119, 2008.
  4. I. S. Lee and S. J. Kang, "Bending Collapse Characteristics of Hat Section Beam Filled with Structural Foam," Transactions of KSAE, Vol. 14, No.2, pp.92-99, 2006.
  5. M. Takagi, K. Kawamura, T. Kamei, S. Ando and M. Watanabe, "Reinforcement Effect of Thin Walled Curved Beam," Proceedings of JSAE Autumn Conference, pp.145-148, 1992.
  6. DesignLife Theory Guide Ver.5.1, nCode International Ltd., 2008.
  7. D. W. Kim, S. M. Yang, H. W. Kim and D. S. Bae, "Design Sensitivity Analysis of Welded Strut Joints on Vehicle Chassis Frame," The Korean Welding and Joint Society, Vol.16, No.3, pp.141-147, 1998.