Vibration Characteristics of Metamaterial Periodic Multi-Span Beams with Elastic Supports
-
Published:2023-10-19
Issue:
Volume:
Page:
-
ISSN:0219-4554
-
Container-title:International Journal of Structural Stability and Dynamics
-
language:en
-
Short-container-title:Int. J. Str. Stab. Dyn.
Author:
Wang Xuehang1ORCID,
Xu Andi1ORCID,
Li Fengming1ORCID
Affiliation:
1. College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
Abstract
A novel metamaterial periodic multi-span beam with elastic supports and local resonators is designed and studied. The vibration characteristics of the designed metamaterial multi-span beam structure are investigated by the spectral element method (SEM) combined with the transfer matrix method (TMM). The accuracy and feasibility of the theoretical methods are validated by the finite element method (FEM) and vibration experiment. It is demonstrated that the metamaterial periodic multi-span beam with elastic supports can produce local resonance bandgaps in the low-frequency regions and Bragg bandgaps in the middle- and high-frequency regions. For some support stiffnesses, the amplitudes and widths of the bandgaps for the proposed structure are larger than those of the metamaterial multi-span beam with simply supported boundaries. Thus, the positions and ranges of the Bragg bandgaps can be adjusted by changing the stiffness of the elastic supports so as to improve the vibration reduction performance of the structure.
Funder
National Natural Science Foundation of China
Heilongjiang Provincial Natural Science Foundation of China
Publisher
World Scientific Pub Co Pte Ltd
Subject
Applied Mathematics,Mechanical Engineering,Ocean Engineering,Aerospace Engineering,Building and Construction,Civil and Structural Engineering