The University of Southampton
University of Southampton Institutional Repository

Dynamic and acoustic properties of viscoelastic laminated structures

Manconi, Elisabetta and Mace, Brian Richard (2010) Dynamic and acoustic properties of viscoelastic laminated structures At 17th International Congress on Sound and Vibration (ICSV), Egypt. 18 - 22 Jul 2010. 8 pp.

Record type: Conference or Workshop Item (Paper)

Abstract

Numerical computation of wave characteristics in composite laminated structures is obtained using a Wave Finite Element method. The method involves conventional finite element (FE) analysis of a small segment of the structure. Typically, this consists of a stack of solid elements meshed through the cross-section. Each layer can be discretised using either one solid element or more solid elements. The analyst must select element type and number appropriately in order to accurately model the three-dimensional stress-strain state of the structure (in the context of FE analysis). The advantages of the proposed method are that it involves post-processing of a small FE model, commercial FE packages can be used to generate the model, no new elements need to be derived and implemented, and the computational cost is extremely small. Axisymmetric properties of the structure can be exploited, and the method can take advantage of the capability of commercial FE packages to model acoustic fluids and fluid-structure interaction. The method is described and illustrated by application to a laminated viscoelastic sandwich panel in vacuo and a laminated viscoelastic sandwich cylinder filled with fluid. Complex dispersion curves and wave modes are given. The global loss factor as a function of the frequency is also predicted, and the effect of the initial pre-stress is discussed.


Full text not available from this repository.

More information

e-pub ahead of print date: July 2010
Additional Information: Paper 299, CD-ROM
Venue - Dates: 17th International Congress on Sound and Vibration (ICSV), Egypt, 2010-07-18 - 2010-07-22

Identifiers

Local EPrints ID: 172055
URI: http://eprints.soton.ac.uk/id/eprint/172055
PURE UUID: 301afcce-df74-41f6-8b3d-1b5ddac7fa66

Catalogue record

Date deposited: 24 Jan 2011 12:00
Last modified: 18 Jul 2017 12:14

Export record

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.

×