Collaborative optimization method of two-line vertical and end part longitudinal damper damping coefficient of high-speed railway

Abstract

The invention relates to a collaborative optimization method of a two-line vertical and end part longitudinal damper damping coefficient of a high-speed railway, and belongs to the technical field of high-speed railway suspension. A complete railway six-degree-of-freedom vertical vibration collaborative optimization simulation model of the high-speed railway is established, the uneven random input of the 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 coefficient of the two-line vertical and vehicle body end part longitudinal damper damping coefficient of the high-speed railway. Through a design example and SIMPACK simulation verification, the method can obtain the accurate and reliable two-line vertical and vehicle body end part longitudinal damper damping coefficient value, and provides a reliable design method for the design of the two-line vertical and vehicle body end part longitudinal damper damping coefficient of the high-speed railway. The method can improve the design level of the suspension system of the high-speed railway, improves vehicle driving safety and stability, can lower product design and experiment cost and enhances the international market competitiveness of the railway vehicle in China.

Description

technical field [0001] The invention relates to a high-speed rail vehicle mount, especially a collaborative optimization method for the damping coefficient of the vertical and end longitudinal shock absorbers of the second series of high-speed rail. Background technique [0002] The secondary vertical shock absorber and the longitudinal shock absorber at the end of the car body have an important impact on the ride comfort and safety of the high-speed rail. However, according to the available information, since the high-speed rail is a multi-degree-of-freedom vibration system, it is very difficult to perform dynamic analysis and calculation on it. The theoretical design method of the system has not been given all the time. Most of them study the secondary vertical shock absorber and the longitudinal shock absorber at the end of the car body separately, and with the help of computer technology, use the multi-body dynamics simulation software SIMPACK or ADAMS / Rail, optimize a...

AI Technical Summary

Problems solved by technology

However, according to the available information, since the high-speed rail is a multi-degree-of-freedom vibration system, it is very difficult to perform dynamic analysis and calculation on it. The theoretical design method of the system has not been given all the time. Most of them study the secondary vertical shock absorber and the longitudinal shock absorber at the end of the car body separately, and with the help of computer technology, use the multi-body dynamics simulation software SIMPACK or ADAMS/ Rail, optimize and determine its size through solid modeling, although this method can get more reliable simulation values, so that the vehicle has better dynamic performance, however, due to the secondary vertical shock absorber and the longitudinal The shock abs...

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