Wave Propagation in Sandwich Structures With Multiresonators

Chen, J. S.; Huang, Yi-Jyun

doi:10.1115/1.4033197

Cited by 29 publications

(3 citation statements)

References 30 publications

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“…To create multiple wave bandgaps where no wave can travel freely, multiresonator mass-in-mass lattice systems were subsequently developed (Huang and Sun, 2010;Tan et al, 2012Tan et al, , 2014. The concepts of aforementioned locally resonant mechanisms provide an extra potential for vibration control applications (Chen et al, 2011(Chen et al, , 2017aChen and Huang, 2016;Chen and Tsai, 2016;Gantzounis et al, 2013;Li et al, 2018;Liu and Hussein, 2012;Pai, 2010;Pai et al, 2014;Sugino et al, 2016Sugino et al, , 2017Xiao et al, 2012aXiao et al, , 2012b. With the proper design of the subsystem, disturbances of certain frequencies cannot propagate through the main structure.…”

Section: Introductionmentioning

confidence: 99%

A metamaterial structure capable of wave attenuation and concurrent energy harvesting

Chen

Cheng

et al. 2019

Journal of Intelligent Material Systems and Structures

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In this study, the capability of wave attenuation as well as energy harvesting in a metamaterial beam with built-in resonators is presented. Each resonator consists of a pretensioned elastic membrane and split-ring masses. The flexural wave band characteristics, eigenmodes, and frequency response are predicted by finite element method. Experiments are conducted to verify the finite element results. The results show that, with proper resonators, vibration caused by disturbances can be conspicuously attenuated at certain frequencies. The attenuation region can be manipulated by adjusting the properties of the membrane-split-ring system. Besides, by adding piezoelectric patches to the membrane, the stored energy in the local resonator can be converted into electric power. The generated voltage output reaches a maximum at the frequency where wave is greatly attenuated. Finally, it is shown that double-layer resonators with parallel connection can generate twice as much voltage as the single-layer resonator.

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Section: Introductionmentioning

confidence: 99%

A metamaterial structure capable of wave attenuation and concurrent energy harvesting

Chen

Cheng

et al. 2019

Journal of Intelligent Material Systems and Structures

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“…[5][6][7][8][9][10] Flexural vibrations in the Timoshenko beam and Euler-Bernoulli beam with locally resonant (LR) structures were studied theoretically and experimentally by Yu et al [11,12] Xiao et al [13,14] extended the plane wave expansion method and studied the propagation of flexural waves in lo-cal resonance beams with multiple additional spring-mass resonators. The propagation of flexural waves in an actively controllable LR beam was theoretically studied by Zhou et al [15] Chen et al [16][17][18] studied the sandwich beam structure with internal LR, and the results show that it can improve the flexural vibration performance under impact load. Pai et al [19] realized the effective combination of two bandgap frequency regions to form a single broadband energy absorption region by incorporating damping elements into a multi-resonator metamaterial beam.…”

Section: Introductionmentioning

confidence: 99%

Impact vibration properties of locally resonant fluid-conveying pipes*

Hu¹,

Zhu²,

Yu³

et al. 2020

Chinese Phys. B

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Fluid-conveying pipe systems are widely used in various equipments to transport matter and energy. Due to the fluid–structure interaction effect, the fluid acting on the pipe wall is easy to produce strong vibration and noise, which have a serious influence on the safety and concealment of the equipment. Based on the theory of phononic crystals, this paper studies the vibration transfer properties of a locally resonant (LR) pipe under the condition of fluid–structure interaction. The band structure and the vibration transfer properties of a finite periodic pipe are obtained by the transfer matrix method. Further, the different impact excitation and fluid–structure interaction effect on the frequency range of vibration attenuation properties of the LR pipe are mainly considered and calculated by the finite element model. The results show that the existence of a low-frequency vibration bandgap in the LR pipe can effectively suppress the vibration propagation under external impact and fluid impact excitation, and the vibration reduction frequency range is near the bandgap under the fluid–structure interaction effect. Finally, the pipe impact experiment was performed to verify the effective attenuation of the LR structure to the impact excitation, and to validate the finite element model. The research results provide a technical reference for the vibration control of the fluid-conveying pipe systems that need to consider blast load and fluid impact.

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“…With the urgent need for vibration control in sandwich panels, Chen and Sun [43] were the first to introduce spring-mass resonators to a sandwich beam in order to study its unusual dynamic behavior with two proposed theoretical continuum models. The initial work was followed and extended by their research group [44][45][46][47][48][49] with a specific focus on new theories, practical experiments, the combined effects of periodic resonators and periodic cores, and also the improvement from a single resonator to multiple resonators. These studies were limited to vibrational dynamic behavior and one-dimensional sandwich structures, where acoustic radiation was not considered and cross-stream mode induced by multi-dimension was also not involved.…”

Section: Introductionmentioning

confidence: 99%

Vibro-Acoustic Performance of a Sandwich Plate with Periodically Inserted Resonators

Guo

Sheng

2019

Applied Sciences

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The vibro-acoustic performance of a sandwich plate with periodic locally resonant (LR) units is examined in this paper, with specific focus on the effect of periodic resonators on the average radiation efficiency and the acoustic radiation to the far field. In order to assess the radiation performance, the band-gap properties of an infinite periodic structure and the vibrational response of a finite periodic structure are first studied with closed-form solutions. Subsequently, the acoustic radiation efficiency of the LR sandwich plate is obtained using the concepts of modal radiation. It is shown that the acoustic radiation power can be reduced significantly, not only in the band-gap but also at frequencies close below the band-gap, due to either the decrease in radiation efficiency or the decrease in the vibration response. Thus, the periodic resonators provide a broader attenuation band for the purposes of noise reduction than for vibration reduction. However, for frequencies close above the band-gap, the acoustic performance became worse, owing to the increase in acoustic radiation efficiency. Fortunately, the increased sound radiation above the band-gap can be reduced by adding a small damping to the resonator, which further broadens the attenuation frequency band. The reason for the variation of acoustic radiation efficiency is also studied and can be physically explained by the effective mass of an LR unit, where increased mass corresponds to decreased radiation efficiency and decreased mass corresponds to increased radiation efficiency. Thus, the effective mass can be a useful parameter for designers to estimate which frequency component will be acoustically reduced or acoustically enhanced in a practical design.

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Wave Propagation in Sandwich Structures With Multiresonators

Cited by 29 publications

References 30 publications

A metamaterial structure capable of wave attenuation and concurrent energy harvesting

A metamaterial structure capable of wave attenuation and concurrent energy harvesting

Impact vibration properties of locally resonant fluid-conveying pipes*

Vibro-Acoustic Performance of a Sandwich Plate with Periodically Inserted Resonators

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