The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body

Changsha, China

The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body

Changsha, China
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Chen Y.,The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body | Bai Z.,The State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body
Zhendong yu Chongji/Journal of Vibration and Shock | Year: 2017

The foam-filled taper tube, which combines the advantages of foam-filled structures and taper structures, has excellent abilities of energy absorption and buckling deformation resisting. The crashworthiness of foam-filled single polygonal tapered tubes(FSPTTs) and foam-filled bitubal polygonal tapered tubes(FBPTTs) under oblique impact loading was studied. A complex proportional assessment and evaluation method(COPRAS) was adopted to evaluate the comprehensive crashworthiness of FSPTTs and FBPTTs. It is found that the foam-filled single circular (FSC) tube and foam-filled bitubal circular (FBC) tube respectively perform better than FSPTTs and FBPTTs with other cross sectional configurations. The multiobjective optimization was conducted on the FSC and FBC tubes under four different impact angles to maximize the specific energy absorption and peak force. The results show that the Pareto curves of both FSC and FBC tubes have only little change when the impact angle changes from 0° to 10°, while the impact angle has significant effect on the Pareto curves when the impact angle changes from 10° to 30°. The FBC tube performs better when the impact angle is 0° or 10°, while the FSC tube performs better when the impact angle is 10° or 20°. Appropriate structures can be chosen to meet practical application requirements. © 2017, Editorial Office of Journal of Vibration and Shock. All right reserved.

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