Overall Optimum Design Methods of the Air Spring Vibration Isolation System

Abstract

As the air springs of a railway vehicle work not only to reduce the vertical vibration of the car body, but also to reduce both lateral vibration and roll, the optimum design of an air spring system should be consistent in these three directions. This paper deals with the method for selecting such values as air spring lateral rigidity, and the damping coefficient of the lateral damper optimum for the reduction of both lateral vibration and roll of the car body. This is under the premise that the oriffice damping coefficient of the air spring is chosen as optimum for the vertical vibration isolation by means of already established method. Also described is the method for determining the car body roll center height in case damping is present.