Thermo-mechanical Coupling Simulation of Brake Disc during 3 times Emergency Braking
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The design of urban rail transit system must satisfy the requirements of three times emergency braking,so it is necessary to analyze the thermal capacity of brake disc in the condition of three times emergency braking.Based on finite element analysis with heat coupling,the transient temperature field and stress field contours could be obtained by creating simulation model of the brake disc,setting boundary conditions by using the simulation parameters according to train operation data,and the finite element software ANSYS.The result of numerical simulation indicates that the method based on ANSYS is effective,and the peak temperature during three times emergency braking is about 293°,the maximal stress is about 135 MPa,which could meet the design requirements of operation.