Brake disk temperatures

[zoidberg]

Hello, could anyone have any idea how to calculate the temperature of brake disks?

[zoidberg]

Hello, could anyone have any idea how to calculate the temperature of brake disks?

[exFSAE]

1) E = M*C*deltaT

2) Heat transfer.

[Christopher Catto]

you'll find it's one of the most complex things to model accurately, due to the fact that ok you're calculating the energy absorbed (mass of car, deceleration) but the shape and size of the disc drastically affects the heat dissipation coefficient, as well as the speed of the airflow around it.

I don't know may rigs that can simulate brakes, unless they run a 30kW motor! Best bet is to fit the discs to something like your old fsae car and simply abuse them as hard as you can to gather data on them.

In the hot days in Detroit 2006 the UH car's brakes were very hot whereas in the 2005 uk competition they were adequate so it's difficult to get the best possible solution for all weathers.

There's a lot of info about brake heat coefficients (many papers use cfd) by the likes of Mercedes and I think GM. You'll need access to Elsevier and some databases through your university.

[exFSAE]

If you want a real ballpark, just look at surface oxidation and coloring on your discs (assuming you're not running something crazy like aluminium).