This information is part of the Modelica Standard Library maintained by the Modelica Association.

The drive train consists of a motor inertia which is driven by a sine-wave motor torque. Via a gearbox the rotational energy is transmitted to a load inertia. Elasticity in the gearbox is modeled by a spring element. A linear damper is used to model the damping in the gearbox bearing.

Note, that a force component (like the damper of this example) which is acting between a shaft and the housing has to be fixed in the housing on one side via component Fixed.

Simulate for 1 second and plot the following variables:
angular velocities of inertias inertia2 and 3: inertia2.w, inertia3.w

amplitude	Value: 10 Type: Torque (N·m) Description: Amplitude of driving torque
freqHz	Value: 5 Type: Frequency (Hz) Description: Frequency of driving torque
Jmotor	Value: 0.1 Type: Inertia (kg·m²) Description: Motor inertia
Jload	Value: 2 Type: Inertia (kg·m²) Description: Load inertia
ratio	Value: 10 Type: Real Description: Gear ratio
damping	Value: 10 Type: Real Description: Damping in bearing of gear