Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Structural Analysis and Optimization of a Low Speed Vehicle Body

저속차량 차체의 구조해석 및 구조최적설계

  • 신정규 (한양대학교 대학원 기계설계학과) ;
  • 심진욱 (한양대학교 대학원 기계설계학과) ;
  • 황상진 (자동차성능시험연구소) ;
  • 박경진 (한양대학교 기계정보경영학부)
  • Published : 2003.07.01
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Abstract

Recently, low speed vehicle (LSV) is beginning to appear for various usages. The body of the LSV is usually made of the aluminum space frame (ASF) type rather than the monocoque or unitary construction type. A pa.1 of the reason is that it is easier to reduce mass efficiently while the required stiffness and strength are maintained. A design flow for LSV is proposed. Design specifications for structural performances of LSV do not exist yet. Therefore, they are defined through a comparative study with general passenger automobiles. An optimization problem is formulated by the defined specifications. At first, one pillar which has an important role in structural performances is selected and the reinforcements of the pillar are determined from topology optimization to maximize the stiffness. At second, the thicknesses of cross sections are determined to minimize the mass of the body while design specifications are satisfied. The optimum solution is compared with an existing design. The optimization process has been performed using a commercial optimization software system, GENESIS 7.0.

Keywords

References

  1. Journal of Materials Processing Technology v.99 Joining Techniques for Aluminum Space Frames Used in Automobiles Part I-Solid and Liquid Phase Welding T.A.Barnes;I.R.Pashby https://doi.org/10.1016/S0924-0136(99)00367-2
  2. Lightweight Electric/Hybrid Vehicle Design R.Hodkinson;J.Fenton
  3. 49 CFR Part 571 (Docket No. NHTSA 98-3949) RIN 2127-AG58 Federal Motor Vehicle Safety Standards National Highwaty Traffic Safety Administration
  4. Structural and Multidisciplinary Optimization v.23 no.4 Automotive Door Design with the ULSAP Concept using Structural Optimization J.K.Shin;K.H.Lee;S.I.Song;G.J.Park https://doi.org/10.1007/s00158-002-0189-z
  5. Structural and Multidisciplinary Optimization v.21 no.4 Robust Optimization of an Automobile Rearview Mirror for Vibration Reduction K.H.Hwang;K.W.Lee;G.J.Park https://doi.org/10.1007/s001580100107
  6. GENESIS 7.0 User's Manual VMA Engineering
  7. The Mitsubishi Companies
  8. Proceedings of the Korean Society of Mechanical Engineers 1995 Spring Annual Meeting(I) Structural Analysis ofthe Aluminum Space Frame for Electric Vehicle T.E.Chung;C.S.Kim;Y.R.Lee
  9. Dictionary of Automotive Engineering(2nd Ed) Goodsell
  10. Transactions of KSAE v.10 no.1 Design of the Impact Energy Absorbing Members and Evaluation of the Crashworthiness for Aluminum Intensive Vehicle H.Y.Kim;J.K.Kim;S.J.Heo;H.Kang
  11. Transactions of KSAE v.6 no.1 The Modeling and the Optimization of an Electrical Vehicle using Joint Analysis K.W.Lee;K.H.Lee;Y.S.Park;G.J.Park
  12. The Korean Society for Noise and Vibration Engineering v.5 no.4 Modeling and Vibration Analysis of Vehicle Structure Using Equivalent Beam Stiffness for Joints H.J.Yim;Y.Y.Kim;s.B.Lee;M.Y.Song
  13. The Finite Element Method in Mechanical Design C.E.Knight
  14. Transactions of KSAE v.6 no.1 Strength Evaluation of Adhesive Bonded Joint for Car Body K.Y.Lee;J.S.Kim;B.S.Kong;H.P.Woo
  15. Hyundai Motor Company Internal Report Body Stiffness and Trends of Lightweight High Stiffness Body Hyudai Motor Company
  16. Modern Automotive Stuctural Analysis M.M.Kamal;J.A.Wolf Jr.
  17. SAE 770604 The Use of Inertia Relief to Estimate Impact Loads M.F.Nelson;J.A.Wolf