Simulation Of Vehicle-Bridge Coupling Vibration Based On Ansys And Simpack

With the development of software technology, it has become possible to study the traditional vehicle-bridge coupling vibration problem by the use of commercial software. A co-simulation method that integrating the FEM software ANSYS and multi-body dynamics software SIMPACK has been presented to investigate the vehicle-bridge coupling vibration. This method can take full advantage of the high efficiency of bridge modeling of ANSYS and the powerful wheel-rail analysis function of SIMPACK. Also, it avoids the process of writing code and testing program, and makes it convenient to review the results between different researchers.A34-degree-of-freedom train model has been established in the SIMPACK platform. The bridge dynamics modeling theory and how to import the finite element model of bridge into multi-body dynamics system is summarized in this paper. Two ways of conducting vehicle-bridge coupling vibration analysis in the SIMPACK platform have been proposed. A vehicle-bridge coupling vibration analysis example of a single train going through a4x32m continuous girder bridge has been adopted to verify the feasibility of the presented method.Based on engineering practice, the FEM model of a cable-stayed bridge has been established and the analysis of the dynamic characteristics of the bridge has been carried out. Vehicle-bridge coupling vibration analysis of this bridge has been conducted at different speeds using the train including8cars. The dynamic response of vehicles and bridge have been analyzed. Also the running comfort and safety of the vehicle, the response of the bridge have been evaluated with relative codes and some existing research, which can provide a reference for the future analysis of similar bridges.