Scale-model tests of railway rolling noise

The rolling noise generated by railway vehicles was evaluated in scale-model tests. The similarity relations associated with wheel/rail noise were derived and the full-scale phenomena were estimated from the scale-model tests. When converting scale-model findings to full-scale, the frequency is scal...

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Autores principales:	Takeshi SUEKI, Toshiki KITAGAWA, Toru YAMAZAKI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2019
Materias:	railway noise rolling noise rail vibration wheel vibration scale-model testing similarity laws Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/21b08d665b8a40dc9bb855ce885302c8
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spelling	oai:doaj.org-article:21b08d665b8a40dc9bb855ce885302c82021-11-29T05:48:33ZScale-model tests of railway rolling noise2187-974510.1299/mej.19-00073https://doaj.org/article/21b08d665b8a40dc9bb855ce885302c82019-11-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/6/6/6_19-00073/_pdf/-char/enhttps://doaj.org/toc/2187-9745The rolling noise generated by railway vehicles was evaluated in scale-model tests. The similarity relations associated with wheel/rail noise were derived and the full-scale phenomena were estimated from the scale-model tests. When converting scale-model findings to full-scale, the frequency is scaled by the ratio 1/n, accelerances of rail and wheel vibration are scaled by the ratio 1/n3, and a logarithmic term is added to the sound pressure level. To verify the validity of these scaling relations, the scale-model measurements were compared with the results of field tests. Through measurements with an impact hammer, the vibration characteristics of the track and wheel were estimated in scale-model tests, were scaled using the proposed similarity laws, and were compared with field measurements of actual tracks and wheels. The quantitative trends of the actual characteristics were estimated well from the scale-model results. The field tests showed that, though the measured noise in the test rig had an unsuitable signal-noise ratio because of the greater driven noise of the test rig itself, the rail vibrations measured in the scale-model test did have a suitable signal-noise ratio. The rail vibration measured in the scale-model test is in good agreement with the measurements from the field tests. If noise from the test rig can be sufficiently reduced, or if rolling noise in the scale model is sufficiently large, we conclude that scale-model tests can simulate actual rolling noise.Takeshi SUEKIToshiki KITAGAWAToru YAMAZAKIThe Japan Society of Mechanical Engineersarticlerailway noiserolling noiserail vibrationwheel vibrationscale-model testingsimilarity lawsMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 6, Iss 6, Pp 19-00073-19-00073 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	railway noise rolling noise rail vibration wheel vibration scale-model testing similarity laws Mechanical engineering and machinery TJ1-1570
spellingShingle	railway noise rolling noise rail vibration wheel vibration scale-model testing similarity laws Mechanical engineering and machinery TJ1-1570 Takeshi SUEKI Toshiki KITAGAWA Toru YAMAZAKI Scale-model tests of railway rolling noise
description	The rolling noise generated by railway vehicles was evaluated in scale-model tests. The similarity relations associated with wheel/rail noise were derived and the full-scale phenomena were estimated from the scale-model tests. When converting scale-model findings to full-scale, the frequency is scaled by the ratio 1/n, accelerances of rail and wheel vibration are scaled by the ratio 1/n3, and a logarithmic term is added to the sound pressure level. To verify the validity of these scaling relations, the scale-model measurements were compared with the results of field tests. Through measurements with an impact hammer, the vibration characteristics of the track and wheel were estimated in scale-model tests, were scaled using the proposed similarity laws, and were compared with field measurements of actual tracks and wheels. The quantitative trends of the actual characteristics were estimated well from the scale-model results. The field tests showed that, though the measured noise in the test rig had an unsuitable signal-noise ratio because of the greater driven noise of the test rig itself, the rail vibrations measured in the scale-model test did have a suitable signal-noise ratio. The rail vibration measured in the scale-model test is in good agreement with the measurements from the field tests. If noise from the test rig can be sufficiently reduced, or if rolling noise in the scale model is sufficiently large, we conclude that scale-model tests can simulate actual rolling noise.
format	article
author	Takeshi SUEKI Toshiki KITAGAWA Toru YAMAZAKI
author_facet	Takeshi SUEKI Toshiki KITAGAWA Toru YAMAZAKI
author_sort	Takeshi SUEKI
title	Scale-model tests of railway rolling noise
title_short	Scale-model tests of railway rolling noise
title_full	Scale-model tests of railway rolling noise
title_fullStr	Scale-model tests of railway rolling noise
title_full_unstemmed	Scale-model tests of railway rolling noise
title_sort	scale-model tests of railway rolling noise
publisher	The Japan Society of Mechanical Engineers
publishDate	2019
url	https://doaj.org/article/21b08d665b8a40dc9bb855ce885302c8
work_keys_str_mv	AT takeshisueki scalemodeltestsofrailwayrollingnoise AT toshikikitagawa scalemodeltestsofrailwayrollingnoise AT toruyamazaki scalemodeltestsofrailwayrollingnoise
_version_	1718407573335441408

Scale-model tests of railway rolling noise

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