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Optimal Design for Torsional Stiffness of the Tubular Space Frame of a Low-Cost Single Seat Race Car

저가 입문용 1인승 레이스카 Tubular Space Frame의 비틀림 강성 최적설계

  • Jang, Woongeun (Division of Mechanical Engineering Technology, Yeungnam University College)
  • 장운근 (영남이공대학교 기계계열)
  • Received : 2014.09.01
  • Accepted : 2014.10.10
  • Published : 2014.10.31

Abstract

Generally, the frame design of a vehicle is a critical technology that plays an important role in the racing and high performance sports car market. The high performance of race car frame means that it requires high torsional stiffness because it directly affects the cornering behavior of the race car. The optimal design for the frame of a low-cost single seat race car was carried out using the DOE (Design Of Experiments) with Taguchi's orthogonal array and FEM (Finite Element Method) analysis to secure sufficient torsional stiffness in this paper. According to the results by DOE and FEM analysis, the optimal design case produced improved 10.7% and 14.5% improvement in each stiffness-to-weight ratio and frame weight than in the early design step. Therefore, this paper shows that the optimal design with Taguchi's orthogonal array is very useful and effective for designing a tubular space frame of a low-cost single seat race car in the early design step.

Keywords

DOE(Design Of Experiments);Optimal design;Race car;Tubular space frame

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