Theoretical investigation into tunable band gaps of an Euler-Bernoulli beam with 2DOF LR structures
Theoretical investigation into tunable band gaps of an Euler-Bernoulli beam with 2DOF LR structures
This paper is concerned with an intelligent phonotic crystals (IPC) consisting of an Euler-Bernoulli beam attached with 2DOF locally resonant (LR) structures. The novel design of the dielectric electroactive polymer (DEAP) rings acting as the springs of oscillators is presented that could be employed to control the transmission of flexural waves on the beam. Tunable band gaps (BGs) can be realized by changing the stiffness of each oscillator driven by the external electric field, where the DEAPs transform electric energy directly into mechanical work under the applied voltage. Discrete copper (Cu) strips are then attached to the DEAP to allow the deformation of DEAP rings. The transfer matrix (TM) theory is adopted to assist readers to better understand the formation of the BG. Simulation results show that this particular configuration is effective for attenuating the flexural waves at low frequencies below 1000Hz where the tunable BGs may occur. Moreover, it is found that a wider BG can be achieved and shifts towards higher frequencies by increasing the applied voltages.
1-10
Xingqian, Zhao
9a4e0fc1-ba79-4721-a459-8cbe3e308bb4
Changgeng, Shuai
0c9e0506-46ba-44dc-bd89-f14d83eab5ab
Yan, Gao
d30f3e3e-e603-435d-b01c-cc1edbed0679
Rustighi, Emiliano
9544ced4-5057-4491-a45c-643873dfed96
3 October 2016
Xingqian, Zhao
9a4e0fc1-ba79-4721-a459-8cbe3e308bb4
Changgeng, Shuai
0c9e0506-46ba-44dc-bd89-f14d83eab5ab
Yan, Gao
d30f3e3e-e603-435d-b01c-cc1edbed0679
Rustighi, Emiliano
9544ced4-5057-4491-a45c-643873dfed96
Xingqian, Zhao, Changgeng, Shuai, Yan, Gao and Rustighi, Emiliano
(2016)
Theoretical investigation into tunable band gaps of an Euler-Bernoulli beam with 2DOF LR structures.
Journal of Physics: Conference Series, 744 (1), .
(doi:10.1088/1742-6596/744/1/012186).
Abstract
This paper is concerned with an intelligent phonotic crystals (IPC) consisting of an Euler-Bernoulli beam attached with 2DOF locally resonant (LR) structures. The novel design of the dielectric electroactive polymer (DEAP) rings acting as the springs of oscillators is presented that could be employed to control the transmission of flexural waves on the beam. Tunable band gaps (BGs) can be realized by changing the stiffness of each oscillator driven by the external electric field, where the DEAPs transform electric energy directly into mechanical work under the applied voltage. Discrete copper (Cu) strips are then attached to the DEAP to allow the deformation of DEAP rings. The transfer matrix (TM) theory is adopted to assist readers to better understand the formation of the BG. Simulation results show that this particular configuration is effective for attenuating the flexural waves at low frequencies below 1000Hz where the tunable BGs may occur. Moreover, it is found that a wider BG can be achieved and shifts towards higher frequencies by increasing the applied voltages.
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Accepted/In Press date: 12 August 2016
e-pub ahead of print date: 1 October 2016
Published date: 3 October 2016
Organisations:
Dynamics Group
Identifiers
Local EPrints ID: 399651
URI: http://eprints.soton.ac.uk/id/eprint/399651
ISSN: 1742-6588
PURE UUID: 418b1a9a-c348-475d-a43c-5cbba2f183be
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Date deposited: 23 Aug 2016 08:52
Last modified: 15 Mar 2024 05:50
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Author:
Zhao Xingqian
Author:
Shuai Changgeng
Author:
Gao Yan
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