Source and Control of Noise Inside Urban Rail Vehicles
In this paper,six kinds of noise are introduced according to the different noise sources of railway vehicles,and the three noise sources(wheel-rail noise,braking noise,air conditioning noise)that contribute most to the noise in-side the vehicle during running,braking and rest are emphatically introduced.Through the exploration of the generation,propagation and control methods of the three kinds of noise,it is concluded that the internal noise can be reduced by ac-tive noise reduction(surface treatment of brake disc and brake disc,increasing damping on track and wheel,optimizing ventilation pipe structure,etc.).At the same time,in the process of sound transmission,the main ways to reduce the brake noise level wheel-rail noise are:installing the car bottom floor,selecting the sierra door,installing the sound insu-lation attracting cold material,spraying damping paste.
万方数据
维普
