Investigation on behaviors of acoustoelastic cavities using a novel reduced finite element–dual reciprocity boundary element formulation

This paper presents the acoustic and structure characteristics of chambers with elastic/rigid baffles and elastic walls using a novel formulation. The acoustic fluid is assumed to be compressible and inviscid, and the effect of mean flow is neglected. The acoustic field is formulated based on the du...

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Autores principales:	Wei Liu, Saeed Bornassi, Yedan Shen, Mohammad Ghalandari, Hassan Haddadpour, Rohollah Dehghani Firouzabadi, Shahab S. Band, Kwok-wing Chau
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	acoustoelastic dual reciprocity boundary element method finite element method baffled structures Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/653da97adb104bbeb4659a9d270fc9e5
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spelling	oai:doaj.org-article:653da97adb104bbeb4659a9d270fc9e52021-11-26T11:19:48ZInvestigation on behaviors of acoustoelastic cavities using a novel reduced finite element–dual reciprocity boundary element formulation1994-20601997-003X10.1080/19942060.2021.1996464https://doaj.org/article/653da97adb104bbeb4659a9d270fc9e52021-01-01T00:00:00Zhttp://dx.doi.org/10.1080/19942060.2021.1996464https://doaj.org/toc/1994-2060https://doaj.org/toc/1997-003XThis paper presents the acoustic and structure characteristics of chambers with elastic/rigid baffles and elastic walls using a novel formulation. The acoustic fluid is assumed to be compressible and inviscid, and the effect of mean flow is neglected. The acoustic field is formulated based on the dual reciprocity boundary element method (DRBEM), and the finite element method (FEM) is used to model the structural dynamics of elastic walls. The reduced-order model (ROM) of the coupled system is derived based on modal analysis of the acoustic field with rigid boundaries and the structure in a vacuum. Numerical examples are presented, and the acoustic modes and frequencies of the chambers are determined by analysis of eigenvalues of the coupled governing equations. The accuracy of the introduced model, which is based on the reduced-order DRBEM-FEM formulation, is examined by comparing the results with analytical and numerical predictions reported in the literature, and good agreements are achieved. Besides, the effects of baffles are studied for different configurations and the elasticity of a wall in a combustion chamber is investigated.Wei LiuSaeed BornassiYedan ShenMohammad GhalandariHassan HaddadpourRohollah Dehghani FirouzabadiShahab S. BandKwok-wing ChauTaylor & Francis Grouparticleacoustoelasticdual reciprocity boundary element methodfinite element methodbaffled structuresEngineering (General). Civil engineering (General)TA1-2040ENEngineering Applications of Computational Fluid Mechanics, Vol 15, Iss 1, Pp 1885-1901 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	acoustoelastic dual reciprocity boundary element method finite element method baffled structures Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	acoustoelastic dual reciprocity boundary element method finite element method baffled structures Engineering (General). Civil engineering (General) TA1-2040 Wei Liu Saeed Bornassi Yedan Shen Mohammad Ghalandari Hassan Haddadpour Rohollah Dehghani Firouzabadi Shahab S. Band Kwok-wing Chau Investigation on behaviors of acoustoelastic cavities using a novel reduced finite element–dual reciprocity boundary element formulation
description	This paper presents the acoustic and structure characteristics of chambers with elastic/rigid baffles and elastic walls using a novel formulation. The acoustic fluid is assumed to be compressible and inviscid, and the effect of mean flow is neglected. The acoustic field is formulated based on the dual reciprocity boundary element method (DRBEM), and the finite element method (FEM) is used to model the structural dynamics of elastic walls. The reduced-order model (ROM) of the coupled system is derived based on modal analysis of the acoustic field with rigid boundaries and the structure in a vacuum. Numerical examples are presented, and the acoustic modes and frequencies of the chambers are determined by analysis of eigenvalues of the coupled governing equations. The accuracy of the introduced model, which is based on the reduced-order DRBEM-FEM formulation, is examined by comparing the results with analytical and numerical predictions reported in the literature, and good agreements are achieved. Besides, the effects of baffles are studied for different configurations and the elasticity of a wall in a combustion chamber is investigated.
format	article
author	Wei Liu Saeed Bornassi Yedan Shen Mohammad Ghalandari Hassan Haddadpour Rohollah Dehghani Firouzabadi Shahab S. Band Kwok-wing Chau
author_facet	Wei Liu Saeed Bornassi Yedan Shen Mohammad Ghalandari Hassan Haddadpour Rohollah Dehghani Firouzabadi Shahab S. Band Kwok-wing Chau
author_sort	Wei Liu
title	Investigation on behaviors of acoustoelastic cavities using a novel reduced finite element–dual reciprocity boundary element formulation
title_short	Investigation on behaviors of acoustoelastic cavities using a novel reduced finite element–dual reciprocity boundary element formulation
title_full	Investigation on behaviors of acoustoelastic cavities using a novel reduced finite element–dual reciprocity boundary element formulation
title_fullStr	Investigation on behaviors of acoustoelastic cavities using a novel reduced finite element–dual reciprocity boundary element formulation
title_full_unstemmed	Investigation on behaviors of acoustoelastic cavities using a novel reduced finite element–dual reciprocity boundary element formulation
title_sort	investigation on behaviors of acoustoelastic cavities using a novel reduced finite element–dual reciprocity boundary element formulation
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/653da97adb104bbeb4659a9d270fc9e5
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_version_	1718409475286630400

Investigation on behaviors of acoustoelastic cavities using a novel reduced finite element–dual reciprocity boundary element formulation

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