Basically, it is a dynamical response procedure when vehicle runs along the track. As for vehicle-track coupling dynamical simulation, the research mainly includes how to model the dynamical system, how to resolve the model and get its dynamical response and how to redisplay the response procedure from the view of visualization. In reference [2] Dr. Zhai Wanming developed A multi-body dynamical mathematical model of railway vehicle, and evaluated the mathematical model by using the algorithm of Correct-Prediction invented by himself. Based on these study, this paper continues to research into visualization of the coupling system dynamics. In our study, at first, visualization, three dimensional animation and three dimensional modeling is introduced into simulation of vehicle-track coupling dynamics, and from the view of system engineering, we present the object-oriented frame of vehicle-track coupling dynamics system. study the object buildup of the system, integrate the mathematical model and geometrical model into the whole by using the concept of model identifying set and assembling model tree. We advance variable parameters 3-dimensional dynamical simulation model of vehicle and track, which can vary along with the change of model. So a three-dimensional platform, which is used to simulate the vehicle-track coupling dynamics, is constructed. Following, we look track line as the function of track, present image key frame technology, in which model and evaluated data interpolate and match each other. Successfully emulate the dynamical case that vehicle runs on the track. Finally, we give a rational developing environment of this project which considers computation, graphics and visualization, study the integrated problem of this project, including rational integrated structure, data-transferring flow and data share, etc. As the result of this study, we develop a made-in-China software used in the simulation of vehicle-track coupling dynamics, which has many characteristics as that of SIMPACK, ADAMAS/RAIL.
