Study on the influence of wheel polygon on the vibration characteristics of bogie system

As one of the important core components train running parts, wheel rail related force will directly affect vehicle performance and passenger comfort. Take a high-speed as research object, track coupling dynamic model is established. The influence polygon on vibration characteristics bogie system analyzed through simulation. results show that when wear occurs, effective value lateral acceleration polygonal set axle box about 18.9 % higher than normal box; at same speed, with increase wave depth polygon, values transverse vertical gradually increase; caused by different amplitude increases first, then decreases change speed. or order; analysis shows has great impact can cause high-frequency box.