Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Material Arrangement Optimization for Automotive BIW considering a Large Number of Design Variables

과다 설계변수를 고려한 차량 BIW의 소재배치 최적화

  • Park, Dohyun (Department of Mechanical Engineering, Hanyang University) ;
  • Jin, Sungwan (Department of Mechanical Engineering, Hanyang University) ;
  • Lee, Gabseong (Department of Mechanical Engineering, Hanyang University) ;
  • Choi, Dong-Hoon (The Center of Innovative Design Optimization Technology (iDOT), Hanyang University)
  • 박도현 (한양대학교 대학원 기계공학과) ;
  • 진성완 (한양대학교 대학원 기계공학과) ;
  • 이갑성 (한양대학교 대학원 기계공학과) ;
  • 최동훈 (한양대학교 최적설계신기술연구센터)
  • Received : 2012.02.10
  • Accepted : 2012.08.30
  • Published : 2013.05.01
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Abstract

Weight reduction of a automobile has been steadily tried in automotive industry to improve fuel efficiency, driving performance and the production profits. Since the weight of BIW takes up a large portion of the total weight of the automobile, reducing the weight of BIW greatly contributes to reducing the total weight of the vehicle. To reduce weight, vehicle manufacturers have tried to apply lightweight materials, such as aluminum and high-strength steel, to the components of BIW instead of conventional steel. In this research, material arrangement of an automotive BIW was optimized by formulating a design problem to minimize weight of the BIW while satisfying design requirements about bending and torsional stiffness and perform a metamodel-based design optimization strategy. As a result of the design optimization, weight of the BIW is reduced by 45.7% while satisfying all design requirements.

Keywords

References

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