Incorrect velocity of gears in Gearbox

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Christo van Rensburg
回答： Steve Miller 2022-12-20
Hi everyone,
So I'm a building a single stage gearbox as depicted in the figure below in Simulink.
Gear 1 (N = 17 teeth) is given a constant torque of 1000 Nm and meshed with gear 2 (53 teeth).
When I run the simulation I get a ridiculously high velocity profile for either gear that keeps increasing as time passes. Should this value not remain constant? What am I missing that could possibly cause this?
Any help is appreciated!

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回答（1 个）

Steve Miller
Steve Miller 2022-12-20
The simulation results you have plotted are correct. You are applying a constant torque to both gears. Applying a constant torque to a rotational system with no damping will result in a system that just keeps accelerating (Torque = Inertia* Acceleration). If you want it to settle at a constant speed, you need to do one of the following:
  1. Apply a torque pulse to get it spinning... OR
  2. Assign damping to one of the Revolute Joints... OR
  3. Use a motion input to ONE of the gears
--Steve

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