New approaches for design and experimental analysis of damping ring and its influence on railway wheel dynamics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F21%3A00549374" target="_blank" >RIV/61388998:_____/21:00549374 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/chapter/10.1007%2F978-981-15-8049-9_80" target="_blank" >https://link.springer.com/chapter/10.1007%2F978-981-15-8049-9_80</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-981-15-8049-9_80" target="_blank" >10.1007/978-981-15-8049-9_80</a>

Jazyk výsledku

angličtina

Název v původním jazyce

New approaches for design and experimental analysis of damping ring and its influence on railway wheel dynamics

Popis výsledku v původním jazyce

This paper deals with the optimization of BONASILENCE damping ring inserted into a groove on a monoblock railway wheel to suppress radial and axial mode shapes of vibrations that cause rolling and curve squeal noise. A free openended damping ring has a slightly larger diameter than the groove and, when inserted, pre-stress of the ring is assured. However, when the circular ring of larger diameter is inserted into a smaller circular groove, the deformation of the ring is such that the ring and groove are not in contact along the entire circumference. Therefore, a noncircular shape of the free damping ring modeled by beam theory for providing even pressure distribution between the ring and groove along the entire circumference is under development. For evaluation of the damping ring effect on different circumferential pre-stresses, a newapproach of measurement of slip between the ring and the groove based on the optical correlation method was used. Patches of speckle images with stochastic structure were generated and glued on the ring and the rim on their boundary at the places of presumed maximal wheel vibration. Vibration of the wheel was then excited, and the area of speckle images was recorded by a high-speed camera. Then the local relative motion between the ring and the wheel which is in the range of micrometers and up to 2 kHz of vibration frequency was evaluated. This method can be used for the finding of an optimal setting of the pre-stresses in the damping ring to achieve the maximal damping.

Název v anglickém jazyce

New approaches for design and experimental analysis of damping ring and its influence on railway wheel dynamics

Popis výsledku anglicky

This paper deals with the optimization of BONASILENCE damping ring inserted into a groove on a monoblock railway wheel to suppress radial and axial mode shapes of vibrations that cause rolling and curve squeal noise. A free openended damping ring has a slightly larger diameter than the groove and, when inserted, pre-stress of the ring is assured. However, when the circular ring of larger diameter is inserted into a smaller circular groove, the deformation of the ring is such that the ring and groove are not in contact along the entire circumference. Therefore, a noncircular shape of the free damping ring modeled by beam theory for providing even pressure distribution between the ring and groove along the entire circumference is under development. For evaluation of the damping ring effect on different circumferential pre-stresses, a newapproach of measurement of slip between the ring and the groove based on the optical correlation method was used. Patches of speckle images with stochastic structure were generated and glued on the ring and the rim on their boundary at the places of presumed maximal wheel vibration. Vibration of the wheel was then excited, and the area of speckle images was recorded by a high-speed camera. Then the local relative motion between the ring and the wheel which is in the range of micrometers and up to 2 kHz of vibration frequency was evaluated. This method can be used for the finding of an optimal setting of the pre-stresses in the damping ring to achieve the maximal damping.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/TF06000020" target="_blank" >TF06000020: Transfer inteligentních a inovativních technologií tlumení pro potlačení vibrací a hluku železničních pryží odpružených kol a silentbloků motoru automobilů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

14th International Conference on Vibration Problems, ICOVP 2019

ISBN

978-98-115-8048-2

ISSN

2195-4356

e-ISSN

—

Počet stran výsledku

12

Strana od-do

1239-1250

Název nakladatele

Springer

Místo vydání

Heidelberg

Místo konání akce

Hersonissos

Datum konání akce

1. 9. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—