한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제25권1호
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  • Pages.11-18
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  • 2017
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  • 1225-6382(pISSN)
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  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
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설계변수에 따른 알루미늄 범퍼 시스템의 저속 충돌해석

Low Speed Crash Behaviour of Aluminium Bumper System W.R.T. Design Variables

  • 김대영 (공주대학교 기계공학과) ;
  • 한보석 (경기산업주식회사 기술영업) ;
  • 홍민선 (경기산업주식회사 기술영업) ;
  • 김동옥 (자동차부품연구원 융합소재공정연구센터) ;
  • 전성식 (공주대학교 기계자동차공학부)
  • Kim, Dae Young (Department of Mechanical Engineering, Kongju National University) ;
  • Han, Bo Seok (Business Development, Kyoung Ki Industrial Co., Ltd.) ;
  • Hong, Min Sun (Business Development, Kyoung Ki Industrial Co., Ltd.) ;
  • Kim, Dong Ok (Materials & Process Development Center, Korea Automotive Technology Institute) ;
  • Cheon, Seong Sik (Department of Mechanical & Automotive Engineering, Kongju National University)
  • 투고 : 2016.04.11
  • 심사 : 2016.11.08
  • 발행 : 2017.01.01
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초록

In the present study, the low speed (4 km/h) crash behaviour of an aluminium bumper system was characterised by FE analyses based on the FMVSS 581, which regulates automotive bumpers. Two types of cross-sectional designs, i.e., Model 1, which contains a single rib and Model 2, double ribs, have been considered along with Al7021, 6082 and 6060 for the aluminium bumper back beam. Variations in thickness starting from 2 to 4 mm of the bumper system cross-section in the FE model was implemented in order to investigate the thickness effect on the bumper's crash behaviour.. Three kinds of design variables, namely, number of ribs, material and thickness, are considered. The FE analysis results are summarised with the maximum load and the Specific Energy Absorption (SEA) since they are the key factors in determining the crashworthiness of automotive structures. The results may also be able to indicate how to achieve lightweight structure of the automotive bumper system either directly or indirectly.

키워드

참고문헌

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