Numerical Study Of Wheel-rail Force On Vehicle Based On MATLAB

As we all know,with the "Belt and Road Initiative" policy guidance,the operational mileage of China's high-speed rail is constantly increasing.High-speed rail has been successfully extended from China to the international market.How to improve the operational speed of high-speed rail,and in the meantime,to increase the railway transport capacity,and to reduce the operating costs is becoming a urgent issue to address.With this kind of environment,the extensive use of prefabricated bridge-structure along lines.Paritcularly,great efforts have been devoted to analyzing the vehicle-bridge coupling theory and phenomena when the vehicles crossing bridges for evaluating the built bridge's function and optimizing the design of the newly built bridge.The wheel-rail plays a key role in the train speed running along the track.In the process of rolling contact,the wheel set not only bears a great weight,but also plays an important role in the train traction,braking and steering.The role of behavior between them affects the stability and safety of direct train movement.Contribute to the wheel-rail rolling contact behavior is related to,Such as the wheel-rail contact surface condition,the material,the environment,the movement behavior and the wheel-Rail Geometry and so on.Therefore,the wheel-rail rolling contact is a very complicated problem.In order to ensure the high speed and heavy load and transport safety,to further improve the quality of transport,interaction between wheel and rail must be studied deeply,and to establish the wheel-rail geometrical relationship is complex problem needed to be solved firstly.To find out the optimal coupling relationship between the wheel and rail,with the exact numerical solution of the wheel-rail force.This research uses the computer simulation method based on the vehicle bridge coupling system.By using computer simulation method and matrix laboratory mathematical tools(Matlab)as date processing tools.We established the contact model between vehicle and wheel-rail.The model focus on the wheel rail contact geometry relationship between wheel and rail,vertical and lateral interactions.The derivation of vertical contact force and lateral Kalker Hertz nonlinear elastic creep theory is given.And this paper mainly introduces the trace method as the theoretical basis,process data,rigid wheel rail rolling contact rail contact geometry parameters for the coupled vibration in the process of integration in China and cooperate with each other in the standard wheel rail contact point coordinates,contact angle and roll angle as boundary conditions,And the use of numerical processing ability of Matlab to solve the creep rate and creep force etc.