Study on Vibration Reduction Design of Suspended Equipment of High Speed Railway Vehicles

13th International Conference on Motion and Vibration Control; 12th International Conference on Recent Advances in Structural Dynamics

Sun, Yu^1 ; Gong, Dao^1 ; Zhou, Jinsong^1

Institute of Rail Transit, Tongji University, Shanghai

201804, China^1

关键词: Elastic suspension;    Elastic vibration;    Flexible vibration;    High;    speed railways;    Rigid-flexible coupled;    Suspended equipments;    Vibration isolations;    Vibration reductions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/744/1/012212/pdf
DOI  :  10.1088/1742-6596/744/1/012212

来源: IOP

【 摘 要 】

The design methods of the under-chassis equipment of a high speed railway vehicle based on dynamic vibration absorber (DVA) theory and vibration isolation theory are proposed, respectively. A detailed rigid-flexible coupled dynamic model of a high speed railway vehicle which includes car body flexibility and the excitation of the suspended equipment is established. The vibrations of the car body and the suspension equipment with the proposed design methods are studied. Results show that the elastic vibration of the car body can be decreased effectively by mounting the under-chassis equipment with elastic suspension. Comparing with vibration isolation theory, the method based on DVA theory is more effective for suppressing the car body flexible vibration, but it will increase the vibration of the equipment to a certain extent. The method based on vibration isolation theory can reduce the vibration of both the car body and the equipment at the same time. Therefore, the design method should be selected appropriately according to the specific requirement.