Original Article
  • Development of the Piecewisely-integrated Composite Bumper Beam Based on the IIHS Crash Analysis
  • Chan-Hee Jeong, Seok-Wu Ham, Gyeong-Seok Kim, Seong S. Cheon
  • Department of Mechanical Engineering, Kongju National University, Department of Mechanical Engineering, Kongju National University, Department of Civil & Environmental Engineering, Kongju National University
  • IIHS 충격해석에 근거한 구간 조합 복합재료 범퍼 빔 개발
  • 정찬희, 함석우, 김경석, 전성식
Abstract
The aim of the current work is to characterise a piecewisely-integrated composite bumper beam based on the IIHS bumper crash protocol. IIHS bumper crash FE analysis for an aluminium type bumper beam was carried out to get the information about the dominant loading types at several regions in the bumper beam during crash. In the meantime, robust stacking sequences against tension and compression have been searched for using FE analysis of a coupon type model. After determining most effective stacking sequences for tension and compression, three-point bending simulation was preliminarily carried out to investigate the combination performance of them. Finally, IIHS bumper crash FE analysis for the piecewisely-integrated composite bumper beam, which consisted of the combination of tension effective stacking sequence and compression efficacious stacking sequence, was conducted and the result was compared with other types of composite bumper beams. It was found that the newly suggested piecewiselyintegrated composite bumper beam showed superior crashworthy behaviour to those of uni-modal stacking sequence composite bumper beams.

본 연구에서는 IIHS기준 범퍼 충돌해석을 통하여, 구간 조합 복합 범퍼 빔의 특성 분석하였다. 충돌 시 범 퍼 빔의 5개 영역에서 지배적인 하중 유형에 대한 정보를 얻기 위해 Al 범퍼 빔에 대한 IIHS 범퍼 충돌 해석이 진 행되었다. 또한, 항공우주 분야에서 빈번히 사용되는 5가지 적층순서 중, 인장 및 압축하중에 가장 효과적인 적층 순서가 복합재료 쿠폰 해석을 통해 결정되었다. 이와 더불어, 결정된 두가지 복합재료의 적층순서를 적용한 복합 재료 빔에 대해 3점 굽힘 해석이 수행되었다. 마지막으로, IIHS 범퍼 충돌 해석을 진행하여 구간 조합으로 이루어 진 복합재료 범퍼 빔을 다른 유형의 복합 범퍼 빔과 비교하였다. 제안된 구간조합 복합재료 범퍼 빔은 단일 적층 순서로 이루어진 복합재료 범퍼 빔에 비해 우수한 충돌 특성을 나타내었다.

Keywords: Bumper beam, IIHS bumper crash, Piecewisely-integrated composite, PIC, Stacking sequence, Triaxiality, Failure index

Keywords: 범퍼 빔, IIHS 범퍼 충돌, 구간조합 복합재료, 적층순서, 3축특성, 파손지수

This Article

  • 2018; 31(1): 37-41

    Published on Feb 28, 2018