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Axial Impact Collapse Analysis on Front-End Side Members of Vehicles by FEM  

Cha Cheon-Seok (Division of Mechanical and Automotive Engineering, Sunchon National University)
Chung Jin-Oh (Division of Mechanical and Automotive Engineering, Sunchon National University)
Yang In-Young (Division of Mechanical Engineering, Chosun University)
Publication Information
Journal of the Korean Society of Safety / v.18, no.4, 2003 , pp. 1-7 More about this Journal
Abstract
The front-end side members of vehicles(spot welded hat and double hat shaped section members) absorb most of the impact energy in a case of front-end collision. In this paper, specimens with various spot weld pitches have been tested with a high impact velocity of 7.19m/sec(impact energy of 1034J). The axial impact collapse simulation on the sections has been carried out to review the collapse characteristics of these sections, using an explicit finite element code, LS-DYNA3D. Comparing the results with experiments, the simulation has been verified; the energy absorbing capacity is analyzed and an analysis method is suggested to obtain exact collapse loads and deformation collapse modes.
Keywords
front-end side members; axial impact collapse; collapse characteristics;
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