Energy absorption capability of a sine waved beam with a folded weak segment

Affiliation of Author(s):航空学院

Journal:J Vib Shock

Abstract:A weak segment has a large influence on the energy absorption capacity of waved beams. Reasonable design of a weak segment can reduce the impact overload of waved beams to decrease overload delivered from a structure to crews inside, and make a waved beam buckled steadily to absorb more energy. Here, the concept of a folded weak segment for a waved beam was proposed, the energy absorption properties of a waved beam with a folded weak segment were studied. Firstly, the FE simulation of a waved beam with an arc shape weak segment was done and the correctness of the FE simulation was verified. Then the FE model for a sine waved beam with a folded weak segment was established, the effects of geometric parameters of the waved beam on its energy absorbing property and its maximum acceleration during the beam suffering crash impact were studied. The results showed that the folded weak segment can effectively reduce the maximum impact load of the waved beam, its effect on the energy absorption ability of the waved beam is small. The results provided a guide for the application of waved beams in energy-absorbing structures. © 2017, Editorial Office of Journal of Vibration and Shock. All right reserved.

ISSN No.:1000-3835

Translation or Not:no

Date of Publication:2017-09-15

Co-author:Zhou, Huazhi,hz,Jiang, Binbin

Correspondence Author:Wang Zhijin

Date of Publication:2017-09-15