Aerodynamic Characteristics and Safety of High-Speed Trains Embankment under Crosswinds

Abstract

This paper studies aerodynamic performance and safety of the high-speed train on the embankment under the action of horizontal wind. Based on the aerodynamics and multi-body system dynamics theory, the high-speed train aerodynamics and dynamics model is established to simulate field characteristics, aerodynamic performance and dynamic performance of high-speed train running on 10-meter embankment. From the simulation we get safety indexes such as derailment coefficient, wheel weight reducing load rate, lateral wheelset force and the wheel/rail vertical force. And the running security region of the train on the embankment can be determined based on high-speed train vehicle test specification. The calculation results of this paper can provide reference for the safe operation of high-speed trains in horizontal wind.