Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2005.11b
- /
- Pages.25-28
- /
- 2005
- /
- 1598-2548(pISSN)
Analysis of Interior Noise for KTX in Tunnel with Concrete Track
콘크리트 궤도 터널 내 KTX 차량의 실내소음 특성 분석
- Published : 2005.11.17
Abstract
The interior noise of KTX in tunnel is becoming the problem since the commercial operating in April 2004. The major sources of interior noise for High speed train ate known as the aerodynamic noise and rolling noise generally. We measure the noise and vibration inside KTX in tunnel in order to find the cause of the interior noise of KTX. The analysis results show that the interior noise of KTX in tunnel with concrete track is increased sharply by a low frequency below 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 aerodynamic noise outside ganqway and rolling noise at the carbody natural frequency.
Keywords