Development of torus-shaped elastic body as a vibration absorber for flexural vibration in railway vehicle carbody and its experimental validation using commuter-type vehicle

This paper presents a study to reduce flexural vibrations of rail vehicle carbody, which have large impact on ride quality, by utilizing deformation of an elastic body as a dynamic vibration absorber (DVA). Donut-shape (called "torus" in this study) is proposed as the elastic body...

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Autores principales:	Takahiro TOMIOKA, Satoshi TACHIKAWA, Yuki AKIYAMA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2017
Materias:	railway flexural vibration of railway vehicle carbody ride comfort damping dynamic vibration absorber vibration of elastic body Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/af2787d888834a5ab0803b7a7cccaab7
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spelling	oai:doaj.org-article:af2787d888834a5ab0803b7a7cccaab72021-11-26T07:00:24ZDevelopment of torus-shaped elastic body as a vibration absorber for flexural vibration in railway vehicle carbody and its experimental validation using commuter-type vehicle2187-974510.1299/mej.16-00467https://doaj.org/article/af2787d888834a5ab0803b7a7cccaab72017-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/4/1/4_16-00467/_pdf/-char/enhttps://doaj.org/toc/2187-9745This paper presents a study to reduce flexural vibrations of rail vehicle carbody, which have large impact on ride quality, by utilizing deformation of an elastic body as a dynamic vibration absorber (DVA). Donut-shape (called "torus" in this study) is proposed as the elastic body considering practical application to rail vehicles. A numerical model to design an elastic torus using finite element (FE) analysis was developed, and it has been demonstrated that the shape and the size of a torus can be determined so as to have desired natural frequency by the FE model. A torus dedicated to a DVA for rail vehicles made of rubber filled with water was designed and manufactured actually. In order to validate the DVA effect of the water-filled elastic torus, a series of stationary vibration tests using a commuter-type test vehicle with stainless steel carbody was conducted. Since the tested vehicle showed two peaks on the frequency response function (FRF) measured on the floor and both of them should be reduced simultaneously to improve ride quality of the vehicle, the authors applied the elastic torus as "double-decker" style (stack a torus up on another torus). Both of the peaks were successfully reduced by applying the double-decker elastic torus. It has been confirmed that the multi-modal vibration reduction effect was achieved because a set of double-decker torus act like a two-degrees-of-freedom (2-DOF) system. Influence on the vibration reduction effect by the difference of the number of applied tori and their distribution on the floor were investigated.Takahiro TOMIOKASatoshi TACHIKAWAYuki AKIYAMAThe Japan Society of Mechanical Engineersarticlerailwayflexural vibration of railway vehicle carbodyride comfortdampingdynamic vibration absorbervibration of elastic bodyMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 4, Iss 1, Pp 16-00467-16-00467 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	railway flexural vibration of railway vehicle carbody ride comfort damping dynamic vibration absorber vibration of elastic body Mechanical engineering and machinery TJ1-1570
spellingShingle	railway flexural vibration of railway vehicle carbody ride comfort damping dynamic vibration absorber vibration of elastic body Mechanical engineering and machinery TJ1-1570 Takahiro TOMIOKA Satoshi TACHIKAWA Yuki AKIYAMA Development of torus-shaped elastic body as a vibration absorber for flexural vibration in railway vehicle carbody and its experimental validation using commuter-type vehicle
description	This paper presents a study to reduce flexural vibrations of rail vehicle carbody, which have large impact on ride quality, by utilizing deformation of an elastic body as a dynamic vibration absorber (DVA). Donut-shape (called "torus" in this study) is proposed as the elastic body considering practical application to rail vehicles. A numerical model to design an elastic torus using finite element (FE) analysis was developed, and it has been demonstrated that the shape and the size of a torus can be determined so as to have desired natural frequency by the FE model. A torus dedicated to a DVA for rail vehicles made of rubber filled with water was designed and manufactured actually. In order to validate the DVA effect of the water-filled elastic torus, a series of stationary vibration tests using a commuter-type test vehicle with stainless steel carbody was conducted. Since the tested vehicle showed two peaks on the frequency response function (FRF) measured on the floor and both of them should be reduced simultaneously to improve ride quality of the vehicle, the authors applied the elastic torus as "double-decker" style (stack a torus up on another torus). Both of the peaks were successfully reduced by applying the double-decker elastic torus. It has been confirmed that the multi-modal vibration reduction effect was achieved because a set of double-decker torus act like a two-degrees-of-freedom (2-DOF) system. Influence on the vibration reduction effect by the difference of the number of applied tori and their distribution on the floor were investigated.
format	article
author	Takahiro TOMIOKA Satoshi TACHIKAWA Yuki AKIYAMA
author_facet	Takahiro TOMIOKA Satoshi TACHIKAWA Yuki AKIYAMA
author_sort	Takahiro TOMIOKA
title	Development of torus-shaped elastic body as a vibration absorber for flexural vibration in railway vehicle carbody and its experimental validation using commuter-type vehicle
title_short	Development of torus-shaped elastic body as a vibration absorber for flexural vibration in railway vehicle carbody and its experimental validation using commuter-type vehicle
title_full	Development of torus-shaped elastic body as a vibration absorber for flexural vibration in railway vehicle carbody and its experimental validation using commuter-type vehicle
title_fullStr	Development of torus-shaped elastic body as a vibration absorber for flexural vibration in railway vehicle carbody and its experimental validation using commuter-type vehicle
title_full_unstemmed	Development of torus-shaped elastic body as a vibration absorber for flexural vibration in railway vehicle carbody and its experimental validation using commuter-type vehicle
title_sort	development of torus-shaped elastic body as a vibration absorber for flexural vibration in railway vehicle carbody and its experimental validation using commuter-type vehicle
publisher	The Japan Society of Mechanical Engineers
publishDate	2017
url	https://doaj.org/article/af2787d888834a5ab0803b7a7cccaab7
work_keys_str_mv	AT takahirotomioka developmentoftorusshapedelasticbodyasavibrationabsorberforflexuralvibrationinrailwayvehiclecarbodyanditsexperimentalvalidationusingcommutertypevehicle AT satoshitachikawa developmentoftorusshapedelasticbodyasavibrationabsorberforflexuralvibrationinrailwayvehiclecarbodyanditsexperimentalvalidationusingcommutertypevehicle AT yukiakiyama developmentoftorusshapedelasticbodyasavibrationabsorberforflexuralvibrationinrailwayvehiclecarbodyanditsexperimentalvalidationusingcommutertypevehicle
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Development of torus-shaped elastic body as a vibration absorber for flexural vibration in railway vehicle carbody and its experimental validation using commuter-type vehicle

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