CLC number: O32
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2019-10-10
Cited: 0
Clicked: 4266
Citations: Bibtex RefMan EndNote GB/T7714
Yi Yuan, Wei-jian Zhou, Jian Li, Wei-qiu Chen, Rong-hao Bao. Tuning bandgaps in metastructured beams: numerical and experimental study[J]. Journal of Zhejiang University Science A, 2019, 20(11): 811-822.
@article{title="Tuning bandgaps in metastructured beams: numerical and experimental study",
author="Yi Yuan, Wei-jian Zhou, Jian Li, Wei-qiu Chen, Rong-hao Bao",
journal="Journal of Zhejiang University Science A",
volume="20",
number="11",
pages="811-822",
year="2019",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1900330"
}
%0 Journal Article
%T Tuning bandgaps in metastructured beams: numerical and experimental study
%A Yi Yuan
%A Wei-jian Zhou
%A Jian Li
%A Wei-qiu Chen
%A Rong-hao Bao
%J Journal of Zhejiang University SCIENCE A
%V 20
%N 11
%P 811-822
%@ 1673-565X
%D 2019
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1900330
TY - JOUR
T1 - Tuning bandgaps in metastructured beams: numerical and experimental study
A1 - Yi Yuan
A1 - Wei-jian Zhou
A1 - Jian Li
A1 - Wei-qiu Chen
A1 - Rong-hao Bao
J0 - Journal of Zhejiang University Science A
VL - 20
IS - 11
SP - 811
EP - 822
%@ 1673-565X
Y1 - 2019
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1900330
Abstract: Tunable metastructures (including phononic crystals and metamaterials) have the unique advantage that one can change the operating frequency and acoustic wave characteristics as needed. In this paper, the bandgap characteristics and their controllability of a metastructured beam with mass-spring oscillators and under an axial force are investigated in depth both by the finite element method and by experiment. The experimental and numerical results indicate that there is one local resonance (LR) bandgap and multiple Bragg scattering (BS) bandgaps. The width and position of each bandgap can be tuned effectively by adjusting the axial force, lattice constant, and spring stiffness, and a super wide pseudo-gap can be obtained under suitable conditions. By integrating different mass-spring oscillators into one metastructured beam, the bandgap width can be broadened and pseudo-gap-like characteristics can be achieved. By changing the number of different oscillators, the propagating distance of elastic waves in the beam can also be controlled. It is further revealed that point defects have a large influence on the BS bandgaps but little effect on the LR bandgap. The present work provides an important reference for the optimal design of adjustable high-performance metastructures.
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