Define the superelement reduction for a rotor

This procedure assumes that you defined at least one rotor in your rotor dynamics model.

1. Choose Home tab→Loads and Conditions group→Simulation Object Type list→Rotor Dynamics Definition .

2. In the Rotor Dynamics Definition dialog box, next to Rotor 1, click Create Region .

3. In the Region dialog box, in the Rotor Superelement Definition (ROTSE) group, from the Modal Reduction Type list:For real modal reduction, choose Real.For complex modal reduction, choose Complex.

4. In the Real or Complex row, click Create Modeling Object.For the Real row, the Real Eigenvalue - Lanczos dialog box opens.For the Complex row, the Complex Eigenvalue dialog box opens.

5. In the Real Eigenvalue - Lanczos or Complex Eigenvalue dialog box, specify the modal reduction parameters.

6. In the Real Eigenvalue - Lanczos or Complex Eigenvalue dialog box, click OK.

7. In the Region dialog box, in the Rotor Superelement Definition (ROTSE) group, next to Select Object, click Rotor Objects (ROTSE) .

8. In the graphics window, select the nodes to be retained after the reduction.

9. In the Region dialog box, click OK.

10. Repeat steps 2 through 9 to define the superelement reduction for other rotors.

11. In the Rotor Dynamics Definition dialog box, click OK.

How do I

Create a rotor dynamic solution

Define bearing supports between coincident nodes with CBEAR elements

Assign physical properties to CBEAR elements

Define rotors

Map CBEAR elements to rotors

Define stationary nodes for CBEAR elements

Define system-wide rotor dynamics solution options

Define rotor-specific rotor dynamics solution options

Specify mode filtering

Model centrifugal stiffening and softening in rotor dynamic analysis

Model mass imbalance in rotor dynamic analysis

Create a Campbell diagram

Learn more

Rotor dynamics

Rotor dynamics workflow

Supported solution types for rotor dynamic analysis

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Define the superelement reduction for a rotor, Simcenter 3D 2021.1 Series

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