An investigation into high-speed train interior noise with operational transfer path analysis method

Abstract Passengers' demands for riding comfort have been getting higher and as the high-speed railway develops. Scientific methods to analyze interior noise of train are needed operational transfer path analysis (OTPA) method provides a theoretical basis guidance control overcomes shortcomings traditional method, which has high test efficiency can be carried out during working state targeted machine. The OTPA model is established from aspects "path reference point-target point" "sound source point". As mechanism transmission path, an assumption made that direct sound propagation ignored, symmetric merged. Using data combined with results spherical array identification, contribution analyzed, respectively, total value spectrum. show conforms calculation identification. At low speed, floor bogie sources dominant. When speed greater than 300 km/h, roof Moreover, carriage pantograph, lifted pantograph obvious source. exterior into mainly through form structural excitation, air excitation non-significant. Certain analyses parts provide guides control.