Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on the Improvement of a Damageability and Repairability by Improving Mounting Structure of a Bumper for Passenger Cars

범퍼체결구조 개선을 통한 손상성.수리성 향상방안에 관한 연구

  • Kim, Ji-Won (Department of Mechanical Engineering, Hanyang University) ;
  • Park, In-Song (Korea Insurance Development Institute / Korea Automobile Research & Technical Center) ;
  • Lee, Chang-Sik (Department of Mechanical Engineering, Hanyang University)
  • 김지원 (한양대학교 기계공학부) ;
  • 박인송 (보험개발원 자동차기술연구소) ;
  • 이창식 (한양대학교 기계공학부)
  • Published : 2010.01.01
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Abstract

The purpose of this study is to analyze the bumper mounting structure of passenger vehicles at low speed collision. In order to improve the repairability and damageability of the vehicle, the low speed crash tests of RCAR(Research Council for Automobile Repairs) standard(front & rear 15km/h 40% offset crash test) were carried out for analysis of 3 different types of bumper mounting structures. The results of experiments show that the impact energy absorbing ability of bumper stay with rectangular crash box type vehicle which is inserted into the bumper rail was superior to another two different bumper mounting structures that are applied to many passenger vehicles. In this thesis, well designed bumper mounting structure such as rectangular crash box type can enhance the safety of occupants as well as contribute to reduce repair cost at low collision accident by improving repairability and damageability of vehicle.

본 연구의 목적은 저속충돌에서 승용차량의 범퍼체결구조를 분석하기 위한 것이다. 차량의 손상성-수리성 향상 연구를 위해 범퍼체결구조가 서로 상이한 3개 차종에 대해 RCAR(세계자동차 수리기술위원회)의 저속충돌시험(전,후면 40% 오프셋 충돌시험) 기준을 적용하였다. 시험결과 충격흡수능력은 직사각형 단면형상을 가지고 그 부분이 범퍼레일에 삽입되는 크래시박스식의 범퍼스테이가 대부분의 차량에 적용되고 있는 다른 두 유형의 범퍼체결구조에 비해 우수하게 나타났다. 우수하게 설계된 직사각형 단면형상을 가지는 범퍼체결구조가 저속충돌사고 시 차량의 손상성-수리성을 향상시킴으로써 승객의 안전성도 강화시킬뿐만 아니라 수리비 절감에도 기여할 수 있다는 것이 본 연구에서 입증되었다.

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References

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