Vehicle energy absorbers consisting of foldable cylinders using response surface methodology
by Yang Yang; Sachiko Ishida; Xilu Zhao; Ichiro Hagiwara
International Journal of Vehicle Performance (IJVP), Vol. 3, No. 4, 2017

Abstract: In vehicle head-on collision, the side member cannot be collapsed more than 70% of its length because of its bulk. Moreover, its initial peak load is sometimes too high. So the authors have investigated the foldable origami cylinder structure - reversed spiral cylindrical (RSC) for the existing side member. RSC has solved these two problems mentioned above. In this paper, we treat so called crash box which is shorter than the side member. In the shorter length case, it makes much more difficult to solve the two problems mentioned above simultaneously. With using RSC for the crash box, it is requested to achieve that initial peak load is lower; meanwhile the amount of crash energy absorption is equal or higher than the existing energy absorber. In order to response to the difficulties, the authors try to seek an ideal design specification consisted by RSC and a straight cylinder.

Online publication date: Mon, 02-Oct-2017

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