Add a Rotor Coupling node to model the coupling characteristics between two rotors. The selection for this feature should be a cross section of the rotor.
Select Coupling type —
Spline,
Torsional, or
User defined. Then, go to the relevant section below to continue defining the properties.
Enter the value of the Torsional stiffness,
kθ,ax. This coupling type connects displacement and tilting rotations across the two rotors on interior boundaries. The axial rotations of both rotors are connected by a spring of stiffness
kθ,ax. On an exterior boundary, displacement and tilting rotations are free, while the axial rotation is connected by a spring of stiffness
kθ,ax relative to an imaginary fixed boundary.
Select Displacement connection —
Rigid or
Flexible. In the
Flexible case, enter the
Translational stiffness,
ku. The displacements across the two rotors will be connected through a spring with the given stiffness. In the
Rigid case, the displacements of both rotors are rigidly connected. On an exterior boundary, the other rotor is assumed to be fixed.
Select Axial rotation connection —
Flexible or
Rigid. In the
Flexible case, enter the
Torsional stiffness,
kθ,ax. The axial rotation across the two rotors is connected by a torsional spring of the given stiffness. In the
Rigid case, the axial rotations of both rotors are rigidly connected. On an exterior boundary, the other rotor is assumed to be fixed.
Select the Bending rotation connection —
Flexible or
Rigid. In the
Flexible case, enter the
Bending stiffness,
kθb. The bending rotation across the two rotors is connected by a spring of the given stiffness. In the
Rigid case, tilting rotations of both the rotors are rigidly connected. On an exterior boundary, the other rotor is assumed to be fixed.