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20 April 2022 Vibration attenuation in graded meta-sandwich beam
Amanpreet Singh, Bishakh Bhattacharya, Arnab Banerjee
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Proceedings Volume 12043, Active and Passive Smart Structures and Integrated Systems XVI; 1204309 (2022) https://doi.org/10.1117/12.2612753
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States
Abstract
Metamaterials have gained considerable attention in the past few decades due to their exceptional properties, such as negative mass, negative stiffness, and negative Poisson’s ratio. Much research has been conducted to understand how the band structure varies with unit cell designs for single and sandwich beam configurations. A few researchers have studied the variation in band structure in the graded metastructure considering single beam configuration. In this article, a new graded meta-sandwich beam has been studied that is constructed by repeating the unit cell, which consists of different combinations of translational and rotational springs. The band structure has been obtained by using the transfer matrix method along with Bloch-Floquet’s theorem. It has been noticed that a significant shifting and widening of the bandgaps has been noticed in the proposed graded meta-sandwich beam. Moreover, different configurations of metasandwich beams have also been studied. This study intends to provide the necessary physical insights to design a graded meta-sandwich beam for vibration attenuation applications.
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Amanpreet Singh, Bishakh Bhattacharya, and Arnab Banerjee "Vibration attenuation in graded meta-sandwich beam", Proc. SPIE 12043, Active and Passive Smart Structures and Integrated Systems XVI, 1204309 (20 April 2022); https://doi.org/10.1117/12.2612753
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KEYWORDS
Wave propagation
Modeling
MATLAB
Mechanical engineering
Metamaterials
Physics
Resonators
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