Dynamical Simulation And Dynamic Parameter Analysis For Traction Vehile Of Heavy Fregight Car

The purpose of this paper is to deduce a dynamical system simulation model for traction vehicle using some mature theories such as dynamical analytical method and vehicle calculated theory which contains the mechanical system vibration theory, the rigid-body dynamics theory and the wheel-track coupling dynamics, and the detailed solving method is given.Receive load and power check up analytical for train tractor, and finity element analysis for key parts. All these above offer a reference for the parameter selection.Firstly, the resistance analysis of lengthy heavy freight car which contains the basic resistance and the odditional resistance is given in the light of many coherent data domestic and abroad. Datum drag analysis contains the wheel-track friction drag and the bearing drag. Odditional resistance analysis comprises the ramp-way additional resistance, the curve resistance and the air friction. And Dynamical system simulation model for traction vehicle of lengthy heavy freight car is then given based on the theory present. Then the correlative portal parameter is input, the model is processed and changed to a mathematical model, the opposite displacement curve can be get after using MATLAB to programming.Secondly, we input voiture parameter and define restriction load. Then full-scale mock-up is moded with Pro/E and simulate, and acceleration curve can be exported. Using Visual Basic programming calculation,we can calculate basic resistance and then calculate the want most dynamic force of arms of train tractor. Thereby,we can find out the radical reason which is caused by train portrait force by analyzing heavy-duty power train lengthways uprush, studying the effect of stability of train caused by it and anatomying its shock wave features.Finally, according to the simulation result, we input correlation parameter, then analyse and proofread the load and the power of train tractor, and discuss the frequency power matching, accordinglg, seeks optimum solutions of the electric motor parametric such as power and structure,then provides the theory basis for the parameter choice of train tractor. Then we carry on loads analysis to the component beared the weight of complexity in the traction vehicle working process, and progress finite element analysis by using ANSYS software.