The invention relates to a collaborative optimization method of a one-line and two-line vertical suspension
damping ratio of a high-speed railway vehicle, and belongs to the technical field of high-speed railway vehicle suspension. A
vertical vibration collaborative optimization
simulation model of a one-line and two-line vertical suspension
system is constructed, the uneven random input of a railway is used as input stimulation, the minimum of the
vibration acceleration root-mean-square value of vehicle body vertical movement is taken as a design target, and
optimal design is carried out to obtain an optimal
damping ratio of an optimal one-line and two-line vertical suspension
damping ratio. Through a design example and SIMPACK
simulation verification, the method can obtain the accurate and reliable optimal damping ratio of the one-line vertical suspension and the two-line vertical suspension
system, and provides a reliable design method for the design of the one-line and two-line vertical suspension damping ratio of the high-speed railway vehicle. The method can improve the design level and the vehicle riding comfort of the suspension
system of the high-speed railway vehicle, can lower
product design and experiment cost and enhances the
international market competitiveness of the railway vehicle in China.