OS-E: 6005 Modal Complex Eigenvalue Analysis
This example demonstrates the Rotor Dynamics modal complex eigenvalue analysis using two coaxial rotors.
![](../../../images/solvers/rotor_dynamics_modal_complex_eigenvalue_fe_model.png)
Figure 1. FE-Model
Model Description
FE Model | 1D Elements |
|
Material | Material MAT1 | Rotor:
|
Reference Guide Entries | Keywords | RGYRO, ROTORG, RSPINR, DDVAL, RFORCE, RSPEED, EIGC, EIGRL |
Results
![](../../../images/solvers/rotor_dynamics_modal_complex_eigenvalue_campbell_diagram.png)
Figure 2. Campbell Diagram Plot for the Asynchronous Analysis
![](../../../images/solvers/rotor_dynamics_modal_complex_eigenvalue_critical_frequencies.png)
Figure 3. Critical Frequencies Identified from the Synchronous Analysis. which are matching with the critical speeds calculated using the Campbell diagram from the asynchronous analysis
Model Files
- <install_directory>/demos/hwsolvers/optistruct/examples/RD_MCEIG.fem