Research on AH-model Vehicle Clearance Based on Dynamics Simulation Calculation

Abstract

Objective The AH-model vehicle combines the characteristics of A and B type model vehicles. Due to its structural differences from conventional metro vehicles, there are currently no corresponding standards on vehicle clearance in China at present, thus it is necessary to carry out clearance calculation research. Method Using the dynamic simulation method based on SIMPACK software, the influence of crosswind speed on dynamic lateral offset is analyzed with AH-model metro vehicle as example. A comparative analysis of the calculation method specified in CJJ/T 96—2018 Standard for Metro Gauges is conducted. Result & Conclusion The calculation results indicate that crosswinds have a significant impact on the lateral offset of metro vehicles, while the dynamic displacement calculated by using dynamics SIMPACK software method is relatively small. Based on the results of the two kinds of vehicle dynamics envelope, the formulation method of AH-model vehicle clearance and equipment gauge is deduced, and the recommended vehicle clearance for AH-model is obtained. The method is successfully applied to the clearance of three metro lines in China.

Keywords

• metro vehicle
• ah-model vehicle
• dynamics
• vehicle clearance
• equipment clearance