Comparative study on braking performance of carbon ceramic brake disks for high-speed railway
Aiming at the problems of unknown braking ability of carbon ceramic brake discs under full braking conditions,this paper proposes a comparative analysis method of braking performance of discs based on matching parameter characterization.The kinetic performance characterized by braking deceler-ation and the thermodynamic performance characterized by the accumulation of the maximum temperature rise of the disc surface are considered respectively,and the simulation and analysis model of the braking performance of carbon ceramic brake discs applicable to a variety of line conditions is established.Simu-lation results show that in the set working conditions of carbon ceramic brake disc emergency braking dis-tance up to 6726 m,the maximum temperature of the disc surface up to 941.4℃.In the emergency bra-king mode to implement braking,the disc body temperature rise rate is significantly increased,the threat to the safety of high-speed train braking unit.
carbon-ceramic brake diskbraking performancebraking distancemaximum temper-ature of the disk
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