Research on Modal Simulation of the Sound Cavity in Pantograph Airflow Deflector Covers

As the core component for power acquisition in rail transit trains, the dynamic characteristics of the pantograph directly determine the power supply stability of the pantograph-catenary coupling system. The aerodynamic performance of the pantograph serves as a key indicator for evaluating its overall functionality. The pantograph fairing is a critical component for enhancing the aerodynamic performance of pantographs on high-speed trains. This study investigates the pantograph fairing of a specific high-speed train model using finite element modal simulation. The pantograph geometry was first modeled in SolidWorks, followed by mesh generation and model optimization in HyperMesh. Material properties and boundary conditions were defined in ANSYS Mechanical, with the first 10 natural frequencies and mode shapes extracted using the Lanczos method. The results indicate that the top ten natural frequencies of the pantograph fairing's acoustic cavity mode are concentrated between 165.4 Hz and 669.4 Hz. This research holds significant engineering implications for enhancing the operational stability of high-speed train pantograph-catenary systems.