Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Study on Light Weight Hood Design for Pedestrian Safety

보행자 충돌안전 경량후드 형상설계에 관한 연구

  • Lee, Won-Bae (Graduate school of Automotive Engineering, Catholic University of Daegu) ;
  • Kang, Sung-Jong (School of Mechanical and Automotive Engineering, Catholic University of Daegu)
  • 이원배 (대구가톨릭대학교 대학원 자동차공학과) ;
  • 강성종 (대구가톨릭대학교 기계자동차공학부)
  • Published : 2007.01.01
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Abstract

In this study, first, child headform model was built up, satisfying requirement in the headform validation test. Also, for decreasing both acceleration peak and deformation, a new hood with dome shaped forming in inner panel was investigated. Next, headform impact, complying with draft of EEVC W/G 17, on the central portion of the newly proposed hood were simulated for a steel hood and three aluminum hoods with different thickness for examining the material and thickness effect on HIC value and inner panel deformation. The analysis results explained that aluminum hoods with dome shaped forming in inner panel were highly promising not only for meeting headform safety regulations but also for leading to weight savings. Finally, hood edge design technology in order to reduce pedestrian injury due to the high stiffness of beam type edge and the rigid support, was discussed. Various types of the foam filled edge were designed and their headform safety performance were evaluated. The edge structure with foam filled in upper one third of section exhibited excellent results.

Keywords

References

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