Optimum tuning of damped side-branch silencer using equivalent discrete model and considering open-end correction

This paper describes the optimum tuning of damped side-branch silencers. As is well known, a side-branch silencer is a type of vibration absorber; however, damped side-branch silencers have not yet been sufficiently studied. In this study, to derive the optimum tuning conditions of a side-branch sil...

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Autores principales:	Keisuke YAMADA, Tatsuya SHIMIZU, Hideo UTSUNO, Junichi KURATA, Yoshihiro MURAKAMI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2021
Materias:	side-branch silencer dynamic vibration absorber acoustic field modal analysis open-end correction residual modes damping Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/722ae2ef4f0d4b3094daf02ba68682cf
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spelling	oai:doaj.org-article:722ae2ef4f0d4b3094daf02ba68682cf2021-11-29T06:04:29ZOptimum tuning of damped side-branch silencer using equivalent discrete model and considering open-end correction2187-974510.1299/mej.20-00417https://doaj.org/article/722ae2ef4f0d4b3094daf02ba68682cf2021-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/8/1/8_20-00417/_pdf/-char/enhttps://doaj.org/toc/2187-9745This paper describes the optimum tuning of damped side-branch silencers. As is well known, a side-branch silencer is a type of vibration absorber; however, damped side-branch silencers have not yet been sufficiently studied. In this study, to derive the optimum tuning conditions of a side-branch silencer, modal analysis was applied to wave equations of a host acoustic field and a side-branch silencer. Using the equations of motion with the modal coordinate system, an equivalent discrete model of the coupled vibration system between the host acoustic field and side-branch silencer was obtained. The degrees of freedom of the equivalent discrete model were reduced to two by ignoring the non-related acoustic modes, and the two fixed point method was applied to the two degree of freedom vibration system to derive the optimum natural frequency ratio and optimum loss factor of the side-branch silencer. In addition, open-end correction of the side-branch silencer was formulated considering the effect of residual acoustic modes of the host acoustic field. A theoretical analysis with respect to the optimum tuning conditions and open-end correction was validated through simulations and experiments.Keisuke YAMADATatsuya SHIMIZUHideo UTSUNOJunichi KURATAYoshihiro MURAKAMIThe Japan Society of Mechanical Engineersarticleside-branchsilencerdynamic vibration absorberacoustic fieldmodal analysisopen-end correctionresidual modesdampingMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 8, Iss 1, Pp 20-00417-20-00417 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	side-branch silencer dynamic vibration absorber acoustic field modal analysis open-end correction residual modes damping Mechanical engineering and machinery TJ1-1570
spellingShingle	side-branch silencer dynamic vibration absorber acoustic field modal analysis open-end correction residual modes damping Mechanical engineering and machinery TJ1-1570 Keisuke YAMADA Tatsuya SHIMIZU Hideo UTSUNO Junichi KURATA Yoshihiro MURAKAMI Optimum tuning of damped side-branch silencer using equivalent discrete model and considering open-end correction
description	This paper describes the optimum tuning of damped side-branch silencers. As is well known, a side-branch silencer is a type of vibration absorber; however, damped side-branch silencers have not yet been sufficiently studied. In this study, to derive the optimum tuning conditions of a side-branch silencer, modal analysis was applied to wave equations of a host acoustic field and a side-branch silencer. Using the equations of motion with the modal coordinate system, an equivalent discrete model of the coupled vibration system between the host acoustic field and side-branch silencer was obtained. The degrees of freedom of the equivalent discrete model were reduced to two by ignoring the non-related acoustic modes, and the two fixed point method was applied to the two degree of freedom vibration system to derive the optimum natural frequency ratio and optimum loss factor of the side-branch silencer. In addition, open-end correction of the side-branch silencer was formulated considering the effect of residual acoustic modes of the host acoustic field. A theoretical analysis with respect to the optimum tuning conditions and open-end correction was validated through simulations and experiments.
format	article
author	Keisuke YAMADA Tatsuya SHIMIZU Hideo UTSUNO Junichi KURATA Yoshihiro MURAKAMI
author_facet	Keisuke YAMADA Tatsuya SHIMIZU Hideo UTSUNO Junichi KURATA Yoshihiro MURAKAMI
author_sort	Keisuke YAMADA
title	Optimum tuning of damped side-branch silencer using equivalent discrete model and considering open-end correction
title_short	Optimum tuning of damped side-branch silencer using equivalent discrete model and considering open-end correction
title_full	Optimum tuning of damped side-branch silencer using equivalent discrete model and considering open-end correction
title_fullStr	Optimum tuning of damped side-branch silencer using equivalent discrete model and considering open-end correction
title_full_unstemmed	Optimum tuning of damped side-branch silencer using equivalent discrete model and considering open-end correction
title_sort	optimum tuning of damped side-branch silencer using equivalent discrete model and considering open-end correction
publisher	The Japan Society of Mechanical Engineers
publishDate	2021
url	https://doaj.org/article/722ae2ef4f0d4b3094daf02ba68682cf
work_keys_str_mv	AT keisukeyamada optimumtuningofdampedsidebranchsilencerusingequivalentdiscretemodelandconsideringopenendcorrection AT tatsuyashimizu optimumtuningofdampedsidebranchsilencerusingequivalentdiscretemodelandconsideringopenendcorrection AT hideoutsuno optimumtuningofdampedsidebranchsilencerusingequivalentdiscretemodelandconsideringopenendcorrection AT junichikurata optimumtuningofdampedsidebranchsilencerusingequivalentdiscretemodelandconsideringopenendcorrection AT yoshihiromurakami optimumtuningofdampedsidebranchsilencerusingequivalentdiscretemodelandconsideringopenendcorrection
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Optimum tuning of damped side-branch silencer using equivalent discrete model and considering open-end correction

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