Study on car body vibration transmissibility analysis approach for railway passenger carriage

Based on the analysis of car body vibration sources for railway passenger carriage, and combined with a vibration transmissibility test which was carried out at a passenger compartment of high-speed train, this article elaborated the car body vibration transmissibility analysis approach which established by coherence function method and transfer function method. In this way, available vibration contribution order, vibration work force and transmission attenuation law and more would be acquired, which all would be the foundation for further optimizing the structure of car body, extending the fatigue life of component and improving the ride comfort. The conclusion confirmed that the analysis approach of car body vibration transmissibility for railway passenger carriage was feasible.