The University of Southampton
University of Southampton Institutional Repository

A phenomenological model of active constrained layers

Illarie, Helene, Kropp, Wolfang and Mace, Brian (2005) A phenomenological model of active constrained layers Journal of Sound and Vibration, 285, (1-2), pp. 281-302. (doi:10.1016/j.jsv.2004.08.029).

Record type: Article

Abstract

Active constrained layer (ACL) treatments consist of a layer of viscoelastic material bonded to the host structure and constrained by an actuator. These treatments control vibrations by means of several mechanisms: the actuator increases the dissipation of energy by increasing the shearing in the viscoelastic layer, and simultaneously it controls the vibrations by applying forces to the host structure through the viscoelastic layer. To optimise ACL treatments, it is necessary to understand their physics. While several models in the literature successfully predict the response of structures treated with ACL, the complexity of these models is not well suited for investigating the mechanisms underlying the behaviour of ACL treatments.
This paper describes a simple model of beams treated with ACL, which allows analytical investigations of the damping and control mechanisms of ACL treatment. The model is based on a modal approach in which each mode of the structure is represented by a mass–spring system. The two layers of the ACL patch are represented by two springs in series, the control voltage in effect driving one of these springs. A numerical validation indicates that the model accuracy is good for ACL patches whose length is smaller than the wavelength of the beam and located at appropriate positions on the host structure.
In order to demonstrate the usefulness of the lumped parameter model to get insight into the behaviour of ACL treatments, the various ACL damping mechanisms are briefly discussed. Results indicate that proportional feedback control is associated with an increase of shearing in the viscoelastic layer, while the action of active forces dominates when derivative feedback is used.

Full text not available from this repository.

More information

Published date: 2005

Identifiers

Local EPrints ID: 28499
URI: http://eprints.soton.ac.uk/id/eprint/28499
ISSN: 0022-460X
PURE UUID: 62db1b18-6189-40b9-aaa2-e804994d3c6b

Catalogue record

Date deposited: 02 May 2006
Last modified: 17 Jul 2017 16:01

Export record

Altmetrics

Contributors

Author: Helene Illarie
Author: Wolfang Kropp
Author: Brian Mace

University divisions

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.

×