Damping design of harmonically excited flexible structures with graded materials to minimize sound pressure and radiation

Alfouneh, M; Ji, J; Luo, Q

Damping design of harmonically excited flexible structures with graded materials to minimize sound pressure and radiation

Alfouneh, M Ji, J

Luo, Q

Permalink

Publisher:: TAYLOR & FRANCIS LTD
Publication Type:: Journal Article
Citation:: Engineering Optimization, 2020
Issue Date:: 2020-01-01

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download Accepted manuscriptAdobe PDF (1.11 MB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Alfouneh, M
dc.contributor.author	Ji, J https://orcid.org/0000-0003-3280-5463
dc.contributor.author	Luo, Q https://orcid.org/0000-0001-5727-9290
dc.date.accessioned	2020-05-31T11:55:59Z
dc.date.available	2021-01-31T18:07:12Z
dc.date.issued	2020-01-01
dc.identifier.citation	Engineering Optimization, 2020
dc.identifier.issn	0305-215X
dc.identifier.issn	1029-0273
dc.identifier.uri	http://hdl.handle.net/10453/141012
dc.description.abstract	© 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group. Topology optimization is an effective method in the design of acoustic media. This article presents optimization for graded damping materials to minimize sound pressure at a reference point or sound power radiation under harmonic excitation. The Helmholtz integral equation is used to calculate an acoustic field to satisfy the Sommerfeld conditions. The equation of motion is solved using a unit dynamic load method. Formulations for the sound pressure or sound power radiation in an integral form are derived in terms of mutual kinetic and strain energy densities. These integrals lead to novel physical response functions for solving the proposed optimization problem to design graded damping materials. The response function derived for individual frequency is utilized to solve the multi-objective optimization problem of minimizing sound pressure at the reference point for excitations with a range of frequencies. Numerical examples are presented to verify the efficiency of the present formulations.
dc.language	English
dc.publisher	TAYLOR & FRANCIS LTD
dc.relation.ispartof	Engineering Optimization
dc.relation.isbasedon	10.1080/0305215X.2020.1735381
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	01 Mathematical Sciences, 09 Engineering
dc.subject.classification	Operations Research
dc.title	Damping design of harmonically excited flexible structures with graded materials to minimize sound pressure and radiation
dc.type	Journal Article
utslib.for	01 Mathematical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2020-05-31T11:55:55Z
pubs.publication-status	Published

Abstract:

© 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group. Topology optimization is an effective method in the design of acoustic media. This article presents optimization for graded damping materials to minimize sound pressure at a reference point or sound power radiation under harmonic excitation. The Helmholtz integral equation is used to calculate an acoustic field to satisfy the Sommerfeld conditions. The equation of motion is solved using a unit dynamic load method. Formulations for the sound pressure or sound power radiation in an integral form are derived in terms of mutual kinetic and strain energy densities. These integrals lead to novel physical response functions for solving the proposed optimization problem to design graded damping materials. The response function derived for individual frequency is utilized to solve the multi-objective optimization problem of minimizing sound pressure at the reference point for excitations with a range of frequencies. Numerical examples are presented to verify the efficiency of the present formulations.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/141012