Nastran environment > Rotor dynamics
Define system-wide rotor dynamics solution options
Choose Home tab→Loads and Conditions group→Simulation Object Type list→Rotor Dynamics Definition .
In the Rotor Dynamics Definition dialog box, in the Parameters group, in the Solutions Options row, click Create Modeling Object .
In the Rotor Dynamic Solution Options dialog box, specify the system-wide solution options for your rotor dynamic analysis.For details on each of the solution options listed on the Rotor Dynamic Solution Options dialog box, see the ROTORD bulk entry in the Simcenter Nastran Quick Reference Guide.
In the Rotor Dynamic Solution Options dialog box, click OK.
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
Define the superelement reduction for a rotor
Map CBEAR elements to rotors
Define stationary nodes for CBEAR elements
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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Pre/Post video examples
Bulk Entry Descriptions
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Define system-wide rotor dynamics solution options, Simcenter 3D 2021.1 Series
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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/xid603638 · retrieved 2026-07-17