The optimization of collapse energy absorption capacity for spot-welded members

Cheon-Seok Cha; Jun Woo Park; Hyeon Kyeong Seo; In Young Yang

doi:10.1117/12.780373

1 November 2007 The optimization of collapse energy absorption capacity for spot-welded members

Cheon-Seok Cha, Jun Woo Park, Hyeon Kyeong Seo, In Young Yang

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 642366 (2007) https://doi.org/10.1117/12.780373
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

The front-end side members of vehicles are structures with the greatest energy absorbing capability in a front-end collision. These side members mostly consist of spot-welded single hat shape and required to have a high stiffness together with easiness to collapse sequentially to absorb more impact energy. When structural members are subjected to axial loadings, stress is concentrated on their edges. Thus, in order to improve the front-end collision performance for vehicle, this study presents a systematic optimal design process to maximize the collapse energy absorption capacity of front-end side member. The energy absorption capacity of the side member was analyzed according to change of sectional shape and sectional area ratio (sectional area ratio of flat member to "0" shaped member). Based on the experimental result of these side members, the impact simulation were carried out and compared with experimental results.

Citation Download Citation

Cheon-Seok Cha, Jun Woo Park, Hyeon Kyeong Seo, and In Young Yang "The optimization of collapse energy absorption capacity for spot-welded members", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 642366 (1 November 2007); https://doi.org/10.1117/12.780373

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