Design and Simulation Analysis of Dynamic State Test Bench of Shaft Tip Earthing Device in High-Speed Railway Vehicle

The dynamic state test bench is presented for the shaft tip earthing device of the high-speed railway vehicle. The structure and the principle of the dynamic test bench are explored to achieve the reliability test. In order to obtain the performances of the shaft tip earthing device at the high speed and the high-frequency vibration, the characteristics of simulation method include the light-weight modeling, the Hypermesh meshing, and the ANSYS-based simulation for the static and dynamic working conditions. The static and dynamic analyses are both performed on the established simulation model. The maximal stress is smaller than the yield stress. The 1^st-6^nd natural frequencies of the test bench are 186.827 Hz, 253.313 Hz, 300.934 Hz, 401.665 Hz, 415.467 Hz, and 762.488 Hz, respectively. The dynamic test bench improves the reliability test technology of the shaft tip earthing device.