Simulation research on temperature rise of rail caused by linear eddy current brake based on transient magnetic-thermal coupling

In order to study the rail temperature change caused by the linear eddy current brake, aiming at the problem that the nonlinear magnetic conductive material is difficult to be calculated by the theoretical and numerical calculation methods, the finite element model of the linear eddy current brake and the rail is established by using ANSYS workbench simulation platform. The eddy current loss generated inside the rail is calculated in the transient magnetic field simulation, and it is used as the thermal load of the transient temperature field. The temperature field model is calculated by the magnetic-thermal coupling simulation method, and the curve of the temperature of the rail head surface, the curve of average temperature of rail and the distribution of rail temperature are obtained. The curve of average temperature of the rail obtained through the simulation method and the results calculated by the law of energy conservation are compared, the correctness of the simulation model is verified.