Characterizing wheel flat impact noise with an efficient time domain model

J. Yang; D. J. Thompson; Y. Takano

doi:10.1007/978-3-662-44832-8_15

Characterizing wheel flat impact noise with an efficient time domain model

J. Yang^*, D. J. Thompson, Y. Takano

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

To investigate railway impact noise caused by discrete rail or wheel irregularities, such as wheel flats, rail joints, switches and crossings, a time-domain wheel/rail interaction model is needed. However, time-domain models are normally time consuming to solve and this makes it difficult to carry out parametric studies and gain insight into physical behaviour. A simple mass-spring equivalent track model is developed here to gain insight into the impact vibration induced by a wheel flat irregularity. With the track system simplified to only three degrees-of-freedom, the calculation times of the wheel/rail interaction simulation are reduced by a factor of 10 compared to a corresponding finite element track model. Using this very efficient time-domain wheel/rail interaction model, the characteristics of impact noise in the audio frequency range due to a wheel flat are studied.

Original language	English
Pages (from-to)	109-116
Number of pages	8
Journal	Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Volume	126
DOIs	https://doi.org/10.1007/978-3-662-44832-8_15
Publication status	Published - 2015

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© Springer-Verlag Berlin Heidelberg 2015.

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title = "Characterizing wheel flat impact noise with an efficient time domain model",

abstract = "To investigate railway impact noise caused by discrete rail or wheel irregularities, such as wheel flats, rail joints, switches and crossings, a time-domain wheel/rail interaction model is needed. However, time-domain models are normally time consuming to solve and this makes it difficult to carry out parametric studies and gain insight into physical behaviour. A simple mass-spring equivalent track model is developed here to gain insight into the impact vibration induced by a wheel flat irregularity. With the track system simplified to only three degrees-of-freedom, the calculation times of the wheel/rail interaction simulation are reduced by a factor of 10 compared to a corresponding finite element track model. Using this very efficient time-domain wheel/rail interaction model, the characteristics of impact noise in the audio frequency range due to a wheel flat are studied.",

author = "J. Yang and Thompson, {D. J.} and Y. Takano",

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doi = "10.1007/978-3-662-44832-8_15",

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AU - Thompson, D. J.

AU - Takano, Y.

N1 - Publisher Copyright: © Springer-Verlag Berlin Heidelberg 2015.

PY - 2015

Y1 - 2015

N2 - To investigate railway impact noise caused by discrete rail or wheel irregularities, such as wheel flats, rail joints, switches and crossings, a time-domain wheel/rail interaction model is needed. However, time-domain models are normally time consuming to solve and this makes it difficult to carry out parametric studies and gain insight into physical behaviour. A simple mass-spring equivalent track model is developed here to gain insight into the impact vibration induced by a wheel flat irregularity. With the track system simplified to only three degrees-of-freedom, the calculation times of the wheel/rail interaction simulation are reduced by a factor of 10 compared to a corresponding finite element track model. Using this very efficient time-domain wheel/rail interaction model, the characteristics of impact noise in the audio frequency range due to a wheel flat are studied.

AB - To investigate railway impact noise caused by discrete rail or wheel irregularities, such as wheel flats, rail joints, switches and crossings, a time-domain wheel/rail interaction model is needed. However, time-domain models are normally time consuming to solve and this makes it difficult to carry out parametric studies and gain insight into physical behaviour. A simple mass-spring equivalent track model is developed here to gain insight into the impact vibration induced by a wheel flat irregularity. With the track system simplified to only three degrees-of-freedom, the calculation times of the wheel/rail interaction simulation are reduced by a factor of 10 compared to a corresponding finite element track model. Using this very efficient time-domain wheel/rail interaction model, the characteristics of impact noise in the audio frequency range due to a wheel flat are studied.

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JO - Notes on Numerical Fluid Mechanics and Multidisciplinary Design

JF - Notes on Numerical Fluid Mechanics and Multidisciplinary Design

ER -

Characterizing wheel flat impact noise with an efficient time domain model

Abstract

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