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An adaptive-passive support for the absorption of tonal waves in structures

An adaptive-passive support for the absorption of tonal waves in structures
An adaptive-passive support for the absorption of tonal waves in structures
High frequency vibration in flexible structures may be represented by travelling waves. Such waves carry energy and may travel large distances before being dissipated. These waves can be suppressed by the attachment of localised supports such as dampers etc. These devices can be designed to absorb the energy of such waves but must be tuned to the frequency of the incident wave in order to perform optimally. The paper concerns an adaptive-passive support for suppressing waves. The properties of the support self-tune so that the device remains optimally tuned. The device consists of an electro-magnetic shunt damper, attached either at and end or at some intermediate point. An adaptive algorithm for tuning the damper based on the minimising the reflection and/or transmission coefficients is proposed, these being estimated from measured vibrations. Numerical results are presented. Experimental results for a tunable damper attached to an end of a beam are reported, with a variable resistor in the shunt damper allowing the support to adapt
9780819485397
7977
79770B
The International Society for Optical Engineering
Rustighi, E.
9544ced4-5057-4491-a45c-643873dfed96
Mace, B.R.
cfb883c3-2211-4f3a-b7f3-d5beb9baaefe
Ghasemi-Nejhad, Mehrdad N.
Rustighi, E.
9544ced4-5057-4491-a45c-643873dfed96
Mace, B.R.
cfb883c3-2211-4f3a-b7f3-d5beb9baaefe
Ghasemi-Nejhad, Mehrdad N.

Rustighi, E. and Mace, B.R. (2011) An adaptive-passive support for the absorption of tonal waves in structures. Ghasemi-Nejhad, Mehrdad N. (ed.) In Active and Passive Smart Structures and Integrated Systems 2011. The International Society for Optical Engineering. 79770B . (doi:10.1117/12.879215).

Record type: Conference or Workshop Item (Paper)

Abstract

High frequency vibration in flexible structures may be represented by travelling waves. Such waves carry energy and may travel large distances before being dissipated. These waves can be suppressed by the attachment of localised supports such as dampers etc. These devices can be designed to absorb the energy of such waves but must be tuned to the frequency of the incident wave in order to perform optimally. The paper concerns an adaptive-passive support for suppressing waves. The properties of the support self-tune so that the device remains optimally tuned. The device consists of an electro-magnetic shunt damper, attached either at and end or at some intermediate point. An adaptive algorithm for tuning the damper based on the minimising the reflection and/or transmission coefficients is proposed, these being estimated from measured vibrations. Numerical results are presented. Experimental results for a tunable damper attached to an end of a beam are reported, with a variable resistor in the shunt damper allowing the support to adapt

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More information

Published date: 6 March 2011
Venue - Dates: Active and Passive Smart Structures and Integrated Systems, San Diego, United States, 2011-03-07 - 2011-03-10
Organisations: Dynamics Group

Identifiers

Local EPrints ID: 333326
URI: http://eprints.soton.ac.uk/id/eprint/333326
ISBN: 9780819485397
PURE UUID: ad9803fc-2e00-44f6-8434-1b9da277c207
ORCID for E. Rustighi: ORCID iD orcid.org/0000-0001-9871-7795
ORCID for B.R. Mace: ORCID iD orcid.org/0000-0003-3312-4918

Catalogue record

Date deposited: 07 Mar 2012 12:19
Last modified: 09 Jan 2022 03:17

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Contributors

Author: E. Rustighi ORCID iD
Author: B.R. Mace ORCID iD
Editor: Mehrdad N. Ghasemi-Nejhad

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