Novel method for calculation of dynamic envelope line of railway vehicle

Abstract

The invention relates to the technical field of rail transit, in particular to a novel method for calculation of a dynamic envelope line of a railway vehicle. The method includes: firstly, determining 3 calculation sections on a vehicle body, and setting observation points, same in serial number and position, on the sections respectively; secondly, on the basis of a vehicle / rail coupling dynamic model, comprehensively considering influences of vehicle and rail participant vibration to quickly determine dynamic displacement of the observation points of the three calculation sections; thirdly, as for the observation points with same serial numbers, taking a maximum value of the dynamic displacement of the 3 calculation sections; finally, drawing the dynamic envelope line of the whole vehicle running on a rail according to an original coordinate value of each observation point and corresponding maximum dynamic displacement and static displacement. Compared with a traditional method for calculation of the dynamic envelope line of the railway vehicle, the novel method has the advantage that objective facts can be represented better to provide scientific theoretical basis and specific implement directions for calculation of dynamic envelope lines of railway vehicles.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a new method for calculating the dynamic envelope of locomotives and vehicles in modern rail transit. Background technique [0002] With the rapid development of the railway transportation system, the requirements for the safety and stability of the railway system have become increasingly prominent. Especially for modern rail transit such as existing speed-up railways, passenger dedicated lines and high-speed railways, faster operating speeds have put forward new requirements for the demarcation of railway vehicles. Due to the complex and changeable line conditions of modern rail transit railways, as well as the many types of railway vehicles, and the need to improve the space utilization along the railway line, the calculation and verification of the dynamic envelope of railway vehicles has more general significance. In addition, the calculation of the dynamic envelope of ...

AI Technical Summary

Problems solved by technology

More importantly, as the running speed increases and the traction weight increases, the impact of track structure vibration on vehicle vibration becomes more and more obvious, which in turn affects the vehicle dynamic envelope. The influence of track structure vibration on the dynamic envelope of the vehicle is not considered, and the obtained dynamic envelope cannot objectively reflect the actual situation

In addition, when the above method calculates the dynamic envelope, it does not conduct statistical analysis on the dynamic displacement of different sections of the vehicle body, and cannot accurately reflect the maximum profile of the entire vehicle dynamic envelope

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