Unidirectional coupling
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| C | |
| in the palette | on the schematic |
The block is designed to simulate a coupling that transmits torque in only one direction. The direction of torque transmission is set in the block properties. The transmitted torque T in Nm is calculated by the formula:


where:
- K – stiffness factor of the coupling, Nm/rad
- D – damping factor of the coupling, Nm·s/rad
- ω – relative angular speed of the half-couplings, rad/s
- φ – relative turn angle of the half-couplings after the start of rotation in the direction of torque transmission, rad
The coupling transmits torque from port "B" to port "F" if the angular speed at port "B" is greater than or equal to the angular speed at port "F".
The coupling transmits torque from port "F" to port "B" if the angular speed at port "F" is greater than or equal to the angular speed at port "B".
Inputs
| Name | Description | Connection line type |
|---|---|---|
| V | Port for connecting the drive shaft (base) | Rotary mechanics |
| F | Port for connecting the driven shaft (following) | Rotary mechanics |
Outputs
None.
Properties
| Name | Parameter | Description | By default | Data type |
|---|---|---|---|---|
| Direction of torque transmission | Dir | Allows you to set the direction of torque transmission. The possible values are: “Port B to Port F", "Port F to Port B" | From port B to port F | Перечисление |
| Stiffness factor of the coupling, N/m | K | Stiffness factor of the coupling | 1000000 | Вещественное |
| Damping factor of the coupling, N·s/m | D | Damping factor of the coupling | 1000 | Вещественное |
Parameters
| Name | Parameter | Description | Data type |
|---|---|---|---|
| Torque, Nm | T | Torque transmitted to port "F" | Вещественное |
| Angular speed differential, rad/s | W | Relative angular speed | Вещественное |
Examples
Examples of block application:

