Design method for damping coefficient of vehicle body end transverse damper of high-speed rail vehicle

Abstract

The invention relates to a design method for the damping coefficient of a vehicle body end transverse damper of a high-speed rail vehicle, and belongs to the technical field of suspension of high-speed rail vehicles. As a seventeen-freedom-degree transverse vibration optimization design simulation model of the whole rail vehicle is set up, and irregularity in the railway direction and horizontal irregularity serve as input excitation, with the minimum root-mean-square value of vibration acceleration of vehicle body side roll motion as the design target, the optimal damping coefficient of the vehicle body end transverse damper is obtained through optimization design. It can be known through design examples and SIMPACK simulation verification that the damping coefficient value of the vehicle body end transverse damper can be obtained accurately and reliably through the method, and a reliable design method is provided for designing the damping coefficient of the vehicle body end transverse damper of the high-speed rail vehicle. By means of the method, the design level of a high-speed rail vehicle suspension system can be improved, traveling safety and stability of the vehicle are improved, product design and test cost can be reduced, and the international market competitiveness of the rail vehicles in China is enhanced.

Description

technical field [0001] The invention relates to a high-speed rail vehicle mount, in particular to a design method for the damping coefficient of a transverse shock absorber at the end of a high-speed rail vehicle body. Background technique [0002] The lateral shock absorber at the end of the car body is installed between two adjacent car bodies of the articulated or bogie-type high-speed rail vehicle, which can effectively control the sway of the car body and significantly increase the integrity and stability of the vehicle. However, according to the available information, it is very difficult to analyze and calculate the dynamics of the rail vehicle because it is a multi-degree-of-freedom vibration system. Most of the theoretical design methods are based on computer technology and multi-body dynamics simulation software SIMPACK or ADAMS / Rail to optimize and determine its size through solid modeling. Good dynamic performance, however, with the continuous increase of the sp...

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Problems solved by technology

However, according to the available information, it is very difficult to analyze and calculate the dynamics of the rail vehicle because it is a multi-degree-of-freedom vibration system. Most of the theoretical design methods are based on computer technology and multi-body dynamics simulation software SIMPACK or ADAMS / Rail to optimize and determine its size through solid modeling. Good dynamic performance, however, with the continuous increase of the speed of rail vehicles, people put forward higher requirements for the design of the damping coefficient of the lateral shock absorber at the end of the car body, the current design of the damping coefficient of the lateral shock absorber at the end of the car body The method cannot give a guiding innovation theory, and cannot meet the development of shock absorber design requirements under the condition of continuous speed-up of rail vehicles.

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