Analytic calculation method of optimal damping coefficient of anti-snake movement damper of high-speed railway vehicle

Abstract

The invention relates to an analytic calculation method of an optimal damping coefficient of an anti-snake movement damper of a high-speed railway vehicle, and belongs to the technical field of the high-speed railway vehicle suspension. A Hurwitz stability criterion is used for calculating to obtain a minimum critical damping coefficient of the anti-snake movement damper, a maximum critical damping coefficient of the anti-snake movement damper is calculated by requirements on the steering resistance coefficient of a bogie when a vehicle carries out curve driving, and an optimal damping coefficient of the anti-snake movement damper is calculated by a golden section principle. Through a design example and SIMPACK simulation verification, the method can obtain the accurate and reliable damping coefficient value of the anti-snake movement damper, and provides a reliable design method for the design of the damping coefficient of the anti-snake movement damper of the high-speed railway vehicle. The method can improve the design level of the suspension system of the high-speed railway vehicle, and vehicle riding comfort and safety, simultaneously 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, in particular to an analytical calculation method for an optimal damping coefficient of an anti-snaking shock absorber of a high-speed rail vehicle. Background technique [0002] As an important component of high-speed rail vehicles, the anti-snake shock absorber can effectively restrain the snake-like motion of the vehicle and significantly improve the driving stability and safety of the vehicle. However, according to the available data, it is very difficult to analyze and calculate the dynamics of the rail vehicle because it is a multi-degree-of-freedom vibration system. At present, the design of the damping coefficient of the anti-snaking shock absorber has not yet given a systematic analytical calculation at home and abroad. Most of the methods use computer technology to select a damping coefficient in the feasible design range (100-1500KN.s / m), and then use the multi-body dynamics simulatio...

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Problems solved by technology

However, according to the available data, it is very difficult to analyze and calculate the dynamics of the rail vehicle because it is a multi-degree-of-freedom vibration system. At present, the design of the damping coefficient of the anti-snaking shock absorber has not yet given a systematic analytical calculation at home and abroad. Most of the methods use computer technology to select a damping coefficient in the feasible design range (100-1500KN.s / m), and then use the multi-body dynamics simulation software SIMPACK or ADAMS / Rail to optimize and determine its damping coefficient through solid modeling. Although this method can obtain relatively reliable simulation values ​​and make the vehicle have better dynamic performance, however, with the continuous increase in the speed of rail vehicles, people put forward higher requirements for the design of the damping coefficient of the anti-snaking shock absorber , the current method for designing the damping coefficient of the anti-snaking shock absorber cannot provide an innovative theory with guiding significance, and cannot meet the development of shock absorber design requirements under the condition of continuous speed-up of rail vehicles

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