Brake Rotor Heat: Calculating Temperature for 120kg Object at 30mph

  • Thread starter Thread starter IM31408
  • Start date Start date
  • Tags Tags
    Brake Heat Rotor
Click For Summary
SUMMARY

The discussion focuses on calculating the heat generated in a brake rotor when stopping a 120kg object traveling at 30 mph (14 m/s). The kinetic energy (E(kin)) is determined to be 11,760 Joules using the formula E(kin) = ½*m*v*v. To accurately assess the temperature increase, the material properties of the brake rotor must be considered, specifically the specific heat capacity. Additionally, factors such as airflow, turbulence, and environmental conditions play a crucial role in heat dissipation, suggesting the need for advanced simulation tools like SolidWorks for precise modeling.

PREREQUISITES
  • Understanding of kinetic energy calculations
  • Knowledge of specific heat capacity of materials
  • Familiarity with heat dissipation principles
  • Experience with simulation software such as SolidWorks
NEXT STEPS
  • Research specific heat capacity for various brake rotor materials
  • Learn about airflow dynamics and their impact on heat dissipation
  • Explore SolidWorks for thermal simulations in mechanical design
  • Investigate experimental methods for testing brake rotor temperature under load
USEFUL FOR

This discussion is beneficial for mechanical engineers, product designers, and anyone involved in the design and testing of braking systems, particularly in the context of bicycles or similar vehicles.

IM31408
Messages
2
Reaction score
0
This isn't so much a homework question but rather something I need to know in order to design something.
I need to know how much a brake rotor will heat up during braking. The force it needs to stop is a 120kg object traveling at 30 mph. I don't know any of the equations necessary to figure this out. I need to know this because I am designing a brake rotor for a bike and it cannot exceed a certain temperature. Any help would be great. Thanks.
 
Physics news on Phys.org
E(kin) = ½*m*v*v

m=120kg
v=14m/s (30mph)

E(kin)=11760Jouel

You need to know which material you are using. For the given material you can find how much energy you need to heat one kilogram one degree celsius (or which ever scale you crazy americans use) ;-)
 
How would I deal with heat dissipation?
 
I would think you would have to know the exact airflow and turbulance around the break, the air temp. and the air hum. You would need a big computer progran such as SolidWorks to simulate it! With a price tag of around 10.000dollers fore a single user program, it might be a little much! I think Ferrie spends millions on these calculations and simulations.
I would propose testing it! The larger the surface arrea the better (drill a lot of holes) :-)
 

Similar threads

I in solving temperature rise in Brake rotors.
  • · Replies 3 ·
Replies
3
Views
3K
Calculating Frictional Torque for a Centrifugal Brake System
  • · Replies 2 ·
Replies
2
Views
4K
What is the preheat temperature for the water entering the gas boiler?
  • · Replies 10 ·
Replies
10
Views
2K
How Much Heat is Generated by a Brake Through Friction?
  • · Replies 3 ·
Replies
3
Views
3K
How Can a Ship Safely Brake in Space Without Crushing Its Inhabitants?
  • · Replies 90 ·
4
Replies
90
Views
12K
Disc Brake Design for Mechanical Project
  • · Replies 2 ·
Replies
2
Views
11K
Undergrad Is a heat vs Mu chart Misleading? What factors into Mu? (brake pads)
  • · Replies 2 ·
Replies
2
Views
7K
Dimensions - Disc Brake Surface Area
  • · Replies 3 ·
Replies
3
Views
4K
Braking spacecraft in a snow-filled tank?
  • · Replies 7 ·
Replies
7
Views
3K
Calculating the mass and price of LPG needed to heat water
  • · Replies 6 ·
Replies
6
Views
11K