Study on Coupled Vertical Vehicle-Bridge Dynamic Performance of Medium and Low-Speed Maglev Train

The levitation stability of maglev trains is determined by the interaction vehicle-bridge dynamic characteristics. state change vehicle and track beam will affect performance trains. In order to study characteristics trains, a coupled model based on an elastic was established influence stiffness load system. form numerical simulation, time-domain key characteristic variables, such as gap vertical deflection beam, under different working conditions were analyzed. simulation shows that system can smoothly converge stable value each condition, which indicates rationality field test. Based Shanghai Lingang medium-and-low-speed test line, carried out, frequency-domain above variables analyzed measured data. results show fluctuation affected stiffness, law consistent with results. increase in or decrease would lead vibration beam. However, train could still maintain good extreme conditions, verified reliability correctness model. conclusion this paper provide reference for design line train.