2. INTRODUCTION:
• Friction based braking system is a common device to convert kinetic energy into thermal energy through a
friction between the brake pads and the rotor faces.
• Brake absorbs the kinetic energy of the rotating part and the energy is dissipated in the form of heat to the
surroundings.
• The main purpose of this study is to analysis the thermomechanical behavior of the dry contact of the brake
disc during the braking phase. The coupled thermal analysis is used to determine the deformation and the
disc for both solid and ventilated disc with three different materials to enhance performance of the rotor
disc.
12. COMPARISON
Material Max temp
°f
Min temp
°f
Grey cast iron 148.71 94.56
Aluminum 135.77 109.22
Steel 146.34 96.75
Material Max temp
°f
Min temp
°f
Grey cast iron 140.67 85.59
Aluminum 131.07 100.54
Steel 139.14 87.60
Ventilated modelSolid model
13. CONCLUSION
• The main conclusions drawn from the program of work reported in this paper are as
follows.
• In this study, we presented results of the thermal behavior of full solid and ventilated discs
in a steady state. we study the thermal behavior of a gray cast iron. In addition, the
influence of disc ventilation on the thermal behavior of the discs brake was analyzed. The
numerical simulation shows that radial ventilation plays a very significant role in cooling of
the disc during the braking phase.
• Thermal analysis is carried out for the application of braking force because of friction for
the time duration of 1 seconds.
• The maximum temperature obtained in grey cast iron rotor disc is at rubbing surface & is
observed to be 148.71˚f.
• The grey cast iron rotor disc is safe based on strength & stability criteria.
• To achieve a best combination of parameters of rotor disc like size, type & materials, &
thermal analysis for 3 different material combinations were done.
