Journal of the Korean Society for Railway (한국철도학회논문집)

The Korean Society for Railway (한국철도학회)
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A Study to Estimate the Emitted Sound Power from the Rolling Stock

철도차량에서 방사되는 음향파워 추정에 관한 연구

  • 이영엽 (한국철도공사 연구원) ;
  • 김재철 (한국철도기술연구원 차륜궤도연구실) ;
  • 이희성 (서울과학기술대학교 철도전문대학원 철도차량시스템공학과 한국도시철도연구소)
  • Received : 2011.03.08
  • Accepted : 2011.04.14
  • Published : 2011.06.26
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Abstract

Generally, sound power is one of the most significant factors to predict and assess noise from sound sources. However, many researchers developed indirect methods to calculate the sound power with noise level because it is impossible to measure sound power directly while a train is running. In this paper, we propose a method to estimate sound power generated due to wheel/rail interaction and propulsive equipment from the measurement of noise emitted from rolling stocks and verify the estimation method by comparing with the other sound power estimation formula. We also analyze the sound power of rolling stocks which are operating in domestic lines such as EMU, Mukoonghwa, KTX using the method proposed in this paper.

일반적으로 음향파워는 소음원으로부터 방사되는 소음의 예측 및 평가를 위한 가장 중요한 요소 중에 하나이다. 그러나 철도차량 주행 시 이 음향파워를 직접 측정하는 것은 불가능하기 때문에 많은 연구자가 소음 레벨을 이용해서 음향파워를 계산하는 간접적인 방법을 개발하였다. 본 연구에서는 철도차량에서 방사되는 음향파워를 전동소음과 동력소음으로 분리하여 추정하는 방법을 제안하였으며, 이 추정방법의 타당성을 검증하였다. 또한 본 연구에서 제안한 방법을 이용하여 현재 국내에서 운행되는 차량(전동차, 무궁화호, KTX)의 음향파워를 계산하여 분석하였다.

Keywords

References

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Cited by

  1. Vibration Analysis of Railway Tracks Forced by Distributed Moving Loads vol.6, pp.4, 2013, https://doi.org/10.7782/IJR.2013.6.4.155