Contribution analysis of vibration mode utilizing operational TPA

Operational transfer path analysis (OTPA) calculates contributions of reference points to response point vibration by using only operational data. Through OTPA, effective interior noise and vibration reduction are achieved by applying intensive countermeasure to the high contributing part. However,...

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Autores principales:	Junji YOSHIDA, Koki TANAKA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	transfer path analysis principal component vibration mode transfer function contribution Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/95a9833f196b494caa7a1a520f36afe3
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spelling	oai:doaj.org-article:95a9833f196b494caa7a1a520f36afe32021-11-26T06:35:12ZContribution analysis of vibration mode utilizing operational TPA2187-974510.1299/mej.15-00589https://doaj.org/article/95a9833f196b494caa7a1a520f36afe32016-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/1/3_15-00589/_pdf/-char/enhttps://doaj.org/toc/2187-9745Operational transfer path analysis (OTPA) calculates contributions of reference points to response point vibration by using only operational data. Through OTPA, effective interior noise and vibration reduction are achieved by applying intensive countermeasure to the high contributing part. However, it becomes difficult occasionally when many reference points have similar contributions by a vibration mode. In this case, obtaining high contributing vibration mode and considering how to reduce the mode become important information. In this study, we attempted to calculate the vibration mode contribution by modifying OTPA. Principal component calculated in OTPA procedure is composed of correlated vibration factors among reference points. We then considered the relationship between the principal component and the vibration mode, and associated the principal components with the vibration modes of a test structure. As a result, high contributing vibration modes to the response point could be found. In addition, information about which side of the structure (response or reference side) had better to be measured intensively was also obtained by evaluating the influence of each principal component to the response point (principal component transfer function). Finally, Several countermeasures were applied to the structure considering the principal component and vibration mode contributions. The result shows effective vibration reduction at the response point could be carried out. Through these procedures, the modified OTPA became more useful tool for applying effective countermeasure.Junji YOSHIDAKoki TANAKAThe Japan Society of Mechanical Engineersarticletransfer path analysisprincipal componentvibration modetransfer functioncontributionMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 1, Pp 15-00589-15-00589 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	transfer path analysis principal component vibration mode transfer function contribution Mechanical engineering and machinery TJ1-1570
spellingShingle	transfer path analysis principal component vibration mode transfer function contribution Mechanical engineering and machinery TJ1-1570 Junji YOSHIDA Koki TANAKA Contribution analysis of vibration mode utilizing operational TPA
description	Operational transfer path analysis (OTPA) calculates contributions of reference points to response point vibration by using only operational data. Through OTPA, effective interior noise and vibration reduction are achieved by applying intensive countermeasure to the high contributing part. However, it becomes difficult occasionally when many reference points have similar contributions by a vibration mode. In this case, obtaining high contributing vibration mode and considering how to reduce the mode become important information. In this study, we attempted to calculate the vibration mode contribution by modifying OTPA. Principal component calculated in OTPA procedure is composed of correlated vibration factors among reference points. We then considered the relationship between the principal component and the vibration mode, and associated the principal components with the vibration modes of a test structure. As a result, high contributing vibration modes to the response point could be found. In addition, information about which side of the structure (response or reference side) had better to be measured intensively was also obtained by evaluating the influence of each principal component to the response point (principal component transfer function). Finally, Several countermeasures were applied to the structure considering the principal component and vibration mode contributions. The result shows effective vibration reduction at the response point could be carried out. Through these procedures, the modified OTPA became more useful tool for applying effective countermeasure.
format	article
author	Junji YOSHIDA Koki TANAKA
author_facet	Junji YOSHIDA Koki TANAKA
author_sort	Junji YOSHIDA
title	Contribution analysis of vibration mode utilizing operational TPA
title_short	Contribution analysis of vibration mode utilizing operational TPA
title_full	Contribution analysis of vibration mode utilizing operational TPA
title_fullStr	Contribution analysis of vibration mode utilizing operational TPA
title_full_unstemmed	Contribution analysis of vibration mode utilizing operational TPA
title_sort	contribution analysis of vibration mode utilizing operational tpa
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/95a9833f196b494caa7a1a520f36afe3
work_keys_str_mv	AT junjiyoshida contributionanalysisofvibrationmodeutilizingoperationaltpa AT kokitanaka contributionanalysisofvibrationmodeutilizingoperationaltpa
_version_	1718409794271838208

Contribution analysis of vibration mode utilizing operational TPA

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