Reply To: Coupled field transient of brakedrum

[peteroznewman]

This looks mostly fine Rohan, the disc stops suddenly because it has a very small inertia.

One suggestion is to have two separate materials for the disc and the pad.  Edit the density of the material for the disc and add 3 zeros to the value so it is 1000 times heavier. If necessary, you can add another zero or two.

You didn't follow the times I laid out in the other discussion which I have copied below.

• Step 1, ramp the Rotational Velocity from 0 to the desired value in 0.9 seconds.
• Step 2, hold the Rotational Velocity constant for 0.09 seconds.
• Step 3, Deactivate the Joint Load (unless you want it active) in 0.01 seconds.
• Step 4, Apply the brakes!
• All your braking data will start at t=1.00 seconds.

You are ramping up the rotational velocity in 0.04 seconds. That will cause a large stress in the massive disc.

When you apply the brakes, you are ramping the force on over 0.01 seconds. Ramp the force on over 0.1 seconds.