철로 전동 소음 해석을 위한 국내 철로의 이론적 진동 해석

초록

The primary sources of the train rolling noise are known as the sleepers, rail and wheels. In the present paper, theoretical modeling of the rail vibration is performed for three different types of railway tracks operated in Korea. They are the conventional ballasted track, KTX ballasted track and KTX concrete track. The rail vibrations of these three tracks are compared in terms of the averaged squared amplitude of velocity which is related with the sound radiation from the rails.