주요 메뉴 바로가기 보조 메뉴 바로가기 본문 바로가기

콘텐츠 본문

논문 국내 국제일반학술지 The suggestion of the standardized finite element model through the experimental verifications of various railway vehicle structures made of sandwich composites

연구성과 설명 사진

논문 초록 (Abstract)

In this study, a standardized finite element model for the carbody structures of various railway vehicles made of sandwich composites was suggested. The standardized finite element model for composite carbody structures was introduced and proposed by comparing the results of real structural tests under vertical, compressive, twisting load and natural frequency tests of various railway vehicles. The results showed that the quadratic shell element was suitable to model the reinforced metal frame used to improve the flexural stiffness of sandwich panels compared to beam elements, and layered shells and solid elements were recommended to model the skin and honeycomb core of sandwich panels compared to sandwich shell elements. Also, the proposed standard finite element model has the merit of being applied to crashworthiness analysis just by minor modifications, such as contact conditions and constraint equations.