| abstract |
The invention discloses a method and system for calculating noise distribution of rail transit vehicles. The whole vehicle is regarded as a system unit, and the vehicle can be obtained by calculating the sound pressure level of each noise source of the vehicle on each acoustic envelope of the invention. The sound pressure distribution and radiated sound power of each radiating surface such as each side wall, top surface, and rail surface of the unit, the above calculation process can be carried out synchronously when the vehicle design is carried out, which is convenient to complete the optimization of the vehicle acoustic materials in the vehicle design stage. Configuration, no complicated test equipment is required, and the test cost is low. |