Combined numerical method for analysis of the dynamic interaction between wheel and assembled crossing

A numerical method combining the vehicle-crossing multi-body dynamic model and the wheel-crossing three-dimensional explicit finite element dynamic model is developed to simulate the dynamic interaction between the wheel and one type of assembled crossing. Using the real parameters of the wagon vehicle and the assembled crossing model, the dynamic force calculation results of the vehicle-crossing multibody dynamic model are applied to the wheel-crossing explicit finite element dynamic model as a dynamic load, the advantage is that it takes into account both the influence of vehicle dynamics and the elastic-plastic material characteristics of the crossing on the whole and local stress response of the crossing, and the obtained local stress state can be used to predict the long-term behavior of the crossing in detail, such as fatigue damage. The acceleration of this type of assembled crossing is measured on the Chinese railway, and the calculated results are compared and analyzed with the vehicle-crossing multi-body dynamics model. The stress response of the assembled crossing when the vehicle passes through under the condition of heavy load is discussed.