최적 충격특성에 갖는 차체구조용 점용접 박육단면부재의 개발 -충격속도변화에 따른 압궤특성을 중심으로-

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양인영;차천석;강종엽
Yang, In-Yeong;Cha, Cheon-Seok;Gang, Jong-Yeop

  • 발행 : 2001.07.01

초록

This paper concerns the crashworthiness of the widely used vehicle structure, the spot welded hat and double hat shaped section members, which are excellent on the point of the energy absorbing capacity and low production cost. The target of this paper is to analyze the energy absorption capacity of the structure against the front-end collision, and to obtain useful information for designing stage. Changing the spot weld pitches on the flanges, the hat and double hat shaped section members were tested on the axial collapse loads in impact velocities of 4.72m/sec, 6.54m/sec, 7.19m/sec and 7.27m/sec. To efficiently review the collapse characteristics of these sections, the simulation have been carried out using explicit FEM package, LS-DYNA3D. The solutions are compared with results from the impact collapse experiments.

키워드

점용접;단일 및 이중모자형 단면;전면충돌;점용접피치;압궤특성;시뮬레이션;충격압궤실험

참고문헌

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