Xiaochen Mao
(, ), Shiji Zhang
(, ), Xia Tong
(, ), Xinlei Fan
(, ), Youheng Dong
(, ), Huan Liu
(, ), Lifeng Wang
(, )
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Bandgap properties and optimization of a metamaterial structure with tunable resonators
This paper presents a tunable elastic metamaterial structure with periodically arranged resonators. The resonator consists of two beams and a moveable lumped mass block. The dynamical model of the proposed structure is established in frequency domain. The frequency responses are obtained by applying the spectral element method and finite element method. The influences of the structural and material parameters on the wave properties are explored. It is shown that the movement of the mass blocks has great relationships with the bandgaps, such as frequency shift and broadening effects. The parameter optimization is given by using genetic algorithms in order to improve the obtained results. The optimal positions of the mass blocks are addressed and ultra-wide bandgaps are revealed. An experimental platform is designed and performed to validate the bandgap characteristics.
期刊介绍：
Acta Mechanica Sinica, sponsored by the Chinese Society of Theoretical and Applied Mechanics, promotes scientific exchanges and collaboration among Chinese scientists in China and abroad. It features high quality, original papers in all aspects of mechanics and mechanical sciences.
Not only does the journal explore the classical subdivisions of theoretical and applied mechanics such as solid and fluid mechanics, it also explores recently emerging areas such as biomechanics and nanomechanics. In addition, the journal investigates analytical, computational, and experimental progresses in all areas of mechanics. Lastly, it encourages research in interdisciplinary subjects, serving as a bridge between mechanics and other branches of engineering and the sciences.
In addition to research papers, Acta Mechanica Sinica publishes reviews, notes, experimental techniques, scientific events, and other special topics of interest.
Related subjects » Classical Continuum Physics - Computational Intelligence and Complexity - Mechanics
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