철도 브레이크 스퀼 소음 해석 연구

초록

In this study, the brake squeal of rail or subway brakes is investigated using the numerical finite element method. A complex eigenvalue analysis is applied to determine the squeal modes of the train brake. Because the geometry of the rail brake pad is relatively large, numerous natural modes of the pad exist, leading to its instability. Therefore, it is important to model the system damping including friction and modal damping. The results show that brake squeal noise in the rail is expected to occur at 3000Hz~ 8000Hz and the corresponding squeal modes are found to occur owing to mode coupling in the rail pad. The unstable pad modes are stabilized by the increase in Rayleigh damping.

키워드