Phase dependent nonlinear parametrically excited systems
Phase dependent nonlinear parametrically excited systems
Nonlinear Parametrically Excited (NPE) systems govern the dynamics of many engineering applications, from cablestayed bridges where vibrations need to be suppressed, to energy harvesters, transducers and acoustic amplifiers where vibrations need to be amplified. This work investigates the effect of different system parameters on the dynamics of a prototype NPE system. The NPE system in this work is a cantilever beam with an electromagnetic subsystem excited at its base. This system allows cubic stiffness, parametric stiffness, cubic parametric stiffness, and the phase difference between different sources of excitation to be varied independently to achieve different dynamic behaviours. A mathematical model is also derived, which provides theoretical understanding of the effects of these parameters, and allows the analysis to be extended to other applications.
Zaghari, Bahareh
a0537db6-0dce-49a2-8103-0f4599ab5f6a
Rustighi, Emiliano
9544ced4-5057-4491-a45c-643873dfed96
Ghandchi Tehrani, Maryam
c2251e5b-a029-46e2-b585-422120a7bc44
29 June 2018
Zaghari, Bahareh
a0537db6-0dce-49a2-8103-0f4599ab5f6a
Rustighi, Emiliano
9544ced4-5057-4491-a45c-643873dfed96
Ghandchi Tehrani, Maryam
c2251e5b-a029-46e2-b585-422120a7bc44
Zaghari, Bahareh, Rustighi, Emiliano and Ghandchi Tehrani, Maryam
(2018)
Phase dependent nonlinear parametrically excited systems.
Journal of Vibration and Control.
(doi:10.1177/1077546318783566).
Abstract
Nonlinear Parametrically Excited (NPE) systems govern the dynamics of many engineering applications, from cablestayed bridges where vibrations need to be suppressed, to energy harvesters, transducers and acoustic amplifiers where vibrations need to be amplified. This work investigates the effect of different system parameters on the dynamics of a prototype NPE system. The NPE system in this work is a cantilever beam with an electromagnetic subsystem excited at its base. This system allows cubic stiffness, parametric stiffness, cubic parametric stiffness, and the phase difference between different sources of excitation to be varied independently to achieve different dynamic behaviours. A mathematical model is also derived, which provides theoretical understanding of the effects of these parameters, and allows the analysis to be extended to other applications.
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Sage_BaharehZaghari
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Accepted/In Press date: 24 May 2018
e-pub ahead of print date: 29 June 2018
Published date: 29 June 2018
Identifiers
Local EPrints ID: 421816
URI: http://eprints.soton.ac.uk/id/eprint/421816
ISSN: 1077-5463
PURE UUID: cdb4e136-c278-4aed-a480-19378a746c21
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Date deposited: 28 Jun 2018 16:30
Last modified: 21 Sep 2024 04:01
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Author:
Bahareh Zaghari
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