Abstract

This paper deals with the measurement and analysis of the squeal noise according to the curvature of rail. The squeal noise is generated by the friction between the railway with curve and the wheel. The squeal noise is a big problem in Busan Metro Line 3. If the developing panel type ANC(Active Noise Control) system which is attached to the floor can reduce 5 ㏈ in below 500 ㎐, the sound pressure level of the whole band pass can be reduced about 4-4.8 ㏈ in squeal noise above the curvature of R400. Curve squeal noise is the intense high frequency tonal that can occur when a railway vehicle transverses a curve. The frequency range is from around 500 to almost 20,000 ㎐, with noise levels up to about 15 ㏈ in curve.

• Keywords: Squeal Noise(스퀼소음),Busan Metro Line 3(부산 도시철도 3호선),Active Noise Control(능동소음제어),Low Frequency Sound Pressure Band(저주파 음압 대역),Octave Analysis(옥타브 분석)