Brake Rotor Temperature

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Brake Rotor Temperature

• Nathan Bloomfield
• Josh Carroll
• Brian Winder

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Objective

• Analyze brake rotor temperature for a Formula SAE
  car.

http//www.comsol.com/showroom/gallery/102.php
http//www.ntrc.gov/pdfs/showcase020506/DaleHartso
ck.pdf
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Assumptions

• Even heat transfer side to side
• Kinetic energy of the wheels is not significant
• All of the kinetic energy goes into the brake
  rotors as heat
• There is nothing else slowing the car down

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Method

• Assume 1.5 g
• constant acceleration
• and deceleration to
• simulate race conditions.
• Five cycles from
• 0 to 37 m/s (83 mph)
• In Excel, we found
• Kinetic energy
• Initial temperature guess
• q"rad, q"conv and total q
• Final temperature
• All of these change throughout the cycle

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Summary of Results
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Summary of Results
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Conclusions and Recommendations

• Use different size rotors
• Rotor width can be changed to increase or
  decrease the overall temperature

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Questions?