한국정밀공학회:학술대회논문집 (Proceedings of the Korean Society of Precision Engineering Conference)

한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

콘크리트 궤도 터널 주행 시 KTX차량의 실내소음 저감방안은 무엇인가?

What are measures to reduce interior noise for KTX in tunnel with concrete track?

  • Kim J.C. (Vehicle Dynamics Research Team, KRRI) ;
  • Koh H.I. (Vehicle Dynamics Research Team, KRRI) ;
  • Lee C.W. (Vehicle Dynamics Research Team, KRRI)
  • 발행 : 2006.05.01
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초록

The interior noise of KTX in tunnel has become an issue since the commercial operating in April 2004. The analysis of the interior noise of KTX in tunnel with concrete track shows sharply increased noise level in the range of 80Hz that is the natural frequency of the KTX carbody. We know that the booming noise inside KTX in tunnel with concrete track is generated by noise outside gangway and rolling noise at the carbody natural frequency. In this Study noise reduction methods are discussed on the basis of the comparison of the KTX and KHST noise characteristics. Alternatively, the effect of the modified mud-flap on the interior noise is introduced.

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