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금속/폴리머 샌드위치 복합재의 기계적 특성 및 범퍼 응용 연구
공경일(Kyungil Kong),박형욱(Hyung Wook Park),경규형(Gyouhyoung Kyung),이규세(Gyuse Lee),서종덕(Seo Jong Duk) 한국자동차공학회 2011 한국자동차공학회 지부 학술대회 논문집 Vol.2011 No.10-2
Recently, the reduction of the vehicle weight is the critical factor to enhancing the fuel efficiency of the passenger cars. Therefore, the lightweight materials have been adopted to the automotive components. However, although the vehicle weight reduces, the overall stiffness should be equal to the steel based automotive components due to the safety of drivers and passengers. One of the good candidates for the lightweight materials satisfy both requirements is the metal/poylmer sandwich. In this study, the static stiffness of this metal/polymer sandwich was experimentally observed with comparison with various steels. Its ratio of impact energy absorption has also been investigated and compared with that of the steels. In addition, the finite element analysis of the front bumper based on the metal/polymer composite has been performed to identify variation of its static stiffness