Test and Analysis of Wheel Treadbraking for Fastheavyload Wagon

Abstract:

Based on the key parameters derivation of the heat flux density and thermal convection or transfer coefficient on treadbraking mode of fastheavyload wagon bogie,one distinctive threedimensional finite element model of the transient temperature field in wheel braking process was developed to reveal a number of characteristics about the brake heat absorption and transmission in one wheel rotating cycle,and was confirmed through the friction brake powertestbed for the tread-braking temperature verification test.The formulas first renovated the calculation model of wheel temperature field including local and overall of braking process.The temperature field simulation can be used further to learn the impact in the treadbraking process of various elements,and provide more reliable parameters and theoretical analysis for the development of heavyloadfast wagon braking mode and braking technology.