Incorrect velocity of gears in Gearbox

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Christo van Rensburg
Christo van Rensburg el 18 de Ag. de 2020
Respondida: Steve Miller el 20 de Dic. de 2022
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!

Respuestas (1)

Steve Miller
Steve Miller el 20 de Dic. de 2022
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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