Comparison of vibration and rolling noise emission of resilient and solid monobloc railway wheels in underground lines

Suárez Esteban, Berta and Serrano, Benito José and Rodríguez, Pablo and Blanquer, Jorge Francisco (2006). Comparison of vibration and rolling noise emission of resilient and solid monobloc railway wheels in underground lines. In: "7th World Congress on Railway Research", 04/06/2006 - 08/06/2006, Montréal, Canadá.

Description

Title: Comparison of vibration and rolling noise emission of resilient and solid monobloc railway wheels in underground lines
Author/s:
  • Suárez Esteban, Berta
  • Serrano, Benito José
  • Rodríguez, Pablo
  • Blanquer, Jorge Francisco
Item Type: Presentation at Congress or Conference (Article)
Event Title: 7th World Congress on Railway Research
Event Dates: 04/06/2006 - 08/06/2006
Event Location: Montréal, Canadá
Title of Book: Proceedings of the 7th World Congress on Railway Research
Date: June 2006
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Mecánica y de Fabricación [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Flat or worn wheels rolling on rough or corrugated tracks can provoke airborne noise and ground-borne vibration, which can be a serious concern for nearby neighbours of urban rail transit lines. Among the various treatments used to reduce vibration and noise, resilient wheels play an important role. In conventional resilient wheels, a slightly prestressed V­shaped rubber ring is mounted between the steel wheel centre and tyre. The elastic layer enhances rolling noise and vibration suppression, as well as impact reduction on the track. In this paper the effectiveness of resilient wheels in underground lines, in comparison to monobloc ones, is assessed. The analysed resilient wheel is able to carry greater loads than standard resilient wheels used for light vehicles. It also presents a greater radial resiliency and a higher axial stiffness than conventional V­wheels. The finite element method was used in this study. A quarter car model was defined, in which the wheelset was modelled as an elastic body. Several simulations were performed in order to assess the vibrational behaviour of elastic wheels, including modal, harmonic and random vibration analysis, the latter allowing the introduction of realistic vertical track irregularities, as well as the influence of the running speed. Due to numerical problems some simplifications were needed. Parametric variations were also performed, in which the sensitivity of the whole system to variations of rubber prestress and Poisson’s ratio of the elastic material was assessed.Results are presented in the frequency domain, showing a better performance of the resilient wheels for frequencies over 200 Hz. This result reveals the ability of the analyzed design to mitigate rolling noise, but not structural vibrations, which are primarily found in the lower frequency range.

More information

Item ID: 12682
DC Identifier: http://oa.upm.es/12682/
OAI Identifier: oai:oa.upm.es:12682
Deposited by: Berta Suárez Esteban
Deposited on: 04 Sep 2012 08:44
Last Modified: 21 Apr 2016 11:57
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