Modeling method and a using method of a gauge-changeable bogie dynamics model

Abstract

The embodiment of the invention discloses a modeling method and a using method of a variable gauge bogie dynamic model. The method comprises the steps that a wheel set model of the gauge-changeable bogie is established, and the wheel set model comprises an axle, bushings and wheels; Setting a transverse gap and an acting force relationship between the axle and the bushing, setting a rotating gap and an acting moment relationship between the wheel and the bushing, and setting a radial gap and a contact relationship between the axle and the bushing; Establishing an axle box body model and a framework model of the gauge-changeable bogie, assembling the wheel set model, the axle box body model and the framework model, and setting a hinge relationship between the wheel set model and the axle box body model and a primary suspension relationship between the axle box body model and the framework model to obtain a dynamic model of the gauge-changeable bogie. According to the modeling method andthe using method of the variable gauge bogie dynamic model provided by the embodiment of the invention, the modeling accuracy of the variable gauge bogie dynamic model is improved.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of rail transit, and in particular to a modeling method and using method of a variable-gauge bogie dynamic model. Background technique [0002] The bogie is an important part of the operation of railway vehicles. Since the train travels in different sections, the load conditions of the components will change from time to time, coupled with the influence of factors such as track irregularities, the parts of the bogie are subjected to extremely complex random loads, so the steering The parts of the frame are typical fatigue parts, so it is of great practical significance to study the dynamic performance of the bogie. [0003] Variable gauge bogies emerged due to differences in railway tracks between countries. In the prior art, when studying the dynamic performance of variable-gauge bogies, the inner distance of the wheelset is modified according to different gauges, and the wheels, ...

AI Technical Summary

Problems solved by technology

The variable gauge structure of the variable gauge bogie determines that there is a rotation gap between the wheel and the bushing, and a transverse gap and a radial gap between the bushing and the axle. Reasons such as track irregularities will increase the above-mentioned distances, thereby changing the dynamic performance of the gauge bogie, thereby affecting the safety, stability and smoothness of train operation

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