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Affiliation of Author(s):航空学院

Journal:Proc. Int. Congr. Sound Vib., ICSV

Abstract:In the present paper, two-dimensional (2D) ABHs are used to attenuate vibration while discarding the dissipation of damping materials. The vibration transmission properties of finite-size plate with embedded different number of ABHs are numerically investigated below the characteristic frequency of ABH element while leaving the damping layer treatment out of account. Simulation results show that the broadband attenuation feature of the considered finite-size plates with embedded ABHs is improved below the characteristic frequency with the number of ABH cell increasing, which really highlights the advantage of multiple 2D ABH indentations for vibration attenuation. Analyses reveal the physical mechanism of generating vibration attenuation and broadening attenuation band. The appearance of attenuation is attributed to the offset effect among modal responses dominated by the phase difference. The attenuation bandwidth depends on the transformation of mode frequencies caused by altering the placement of ABH indentations. The reported phenomena will enrich the existing knowledge on energy distribution in similar ABH systems for vibration suppression and energy harvesting © Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019. All rights reserved.

Translation or Not:no

Date of Publication:2019-01-01

Co-author:jihongli,Jinhao Qiu,Cheng, Li

Correspondence Author:韩冰