The University of Southampton
University of Southampton Institutional Repository

Power flow behaviour and dynamic performance of a nonlinear vibration absorber coupled to a nonlinear oscillator

Power flow behaviour and dynamic performance of a nonlinear vibration absorber coupled to a nonlinear oscillator
Power flow behaviour and dynamic performance of a nonlinear vibration absorber coupled to a nonlinear oscillator
The vibrational power flow characteristics of a two-degree-of-freedom system are investigated to examine the performance of nonlinear absorbers in vibration attenuation of nonlinear primary oscillators. The nonlinearities in the oscillator and those in the absorber are both characterised by cubic restoring and damping forces. Both analytical approximations and numerical integrations are used to obtain time-averaged power flow variables, as well as kinetic energies of the system. Power absorption ratio and the kinetic energy of the nonlinear oscillator are proposed to quantitatively evaluate the effectiveness of nonlinear absorbers with respect to the existing nonlinearities in the oscillator. Comparing with linear absorbers, it is found that softening (hardening) stiffness absorber provides benefits for vibration mitigation of a hardening (softening) stiffness primary oscillator by enhancing power absorption efficiency and reducing the kinetic energy of the oscillator so that the functioning frequency range of the absorber can be enlarged. Nonlinear cubic damping in the absorber is shown beneficial for vibration suppression as the power absorption ratio becomes large at resonance frequencies so that the peak power flow and kinetic energy levels are reduced. The developed model can be conveniently extended to study other types of nonlinearities in the absorber/oscillator. Conclusions and suggestions are provided for applications
0924-090X
1063-1079
Yang, Jian
32e8b622-9602-48ff-8e89-71c9e0ac1e64
Xiong, Yeping
51be8714-186e-4d2f-8e03-f44c428a4a49
Xing, J.T.
d4fe7ae0-2668-422a-8d89-9e66527835ce
Yang, Jian
32e8b622-9602-48ff-8e89-71c9e0ac1e64
Xiong, Yeping
51be8714-186e-4d2f-8e03-f44c428a4a49
Xing, J.T.
d4fe7ae0-2668-422a-8d89-9e66527835ce

Yang, Jian, Xiong, Yeping and Xing, J.T. (2015) Power flow behaviour and dynamic performance of a nonlinear vibration absorber coupled to a nonlinear oscillator. Nonlinear Dynamics, 80, 1063-1079. (doi:10.1007/s11071-014-1556-1).

Record type: Article

Abstract

The vibrational power flow characteristics of a two-degree-of-freedom system are investigated to examine the performance of nonlinear absorbers in vibration attenuation of nonlinear primary oscillators. The nonlinearities in the oscillator and those in the absorber are both characterised by cubic restoring and damping forces. Both analytical approximations and numerical integrations are used to obtain time-averaged power flow variables, as well as kinetic energies of the system. Power absorption ratio and the kinetic energy of the nonlinear oscillator are proposed to quantitatively evaluate the effectiveness of nonlinear absorbers with respect to the existing nonlinearities in the oscillator. Comparing with linear absorbers, it is found that softening (hardening) stiffness absorber provides benefits for vibration mitigation of a hardening (softening) stiffness primary oscillator by enhancing power absorption efficiency and reducing the kinetic energy of the oscillator so that the functioning frequency range of the absorber can be enlarged. Nonlinear cubic damping in the absorber is shown beneficial for vibration suppression as the power absorption ratio becomes large at resonance frequencies so that the peak power flow and kinetic energy levels are reduced. The developed model can be conveniently extended to study other types of nonlinearities in the absorber/oscillator. Conclusions and suggestions are provided for applications

Full text not available from this repository.

More information

e-pub ahead of print date: May 2015
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 370604
URI: http://eprints.soton.ac.uk/id/eprint/370604
ISSN: 0924-090X
PURE UUID: 4166f838-eb09-4f19-9f5f-496b9369d1d8
ORCID for Yeping Xiong: ORCID iD orcid.org/0000-0002-0135-8464

Catalogue record

Date deposited: 31 Oct 2014 15:28
Last modified: 17 Dec 2019 01:52

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×