Post-processing 3D cyclic symmetry and 2D axisymmetric results for a rotor dynamic analysis (SOL 414)

To post-process 3D cyclic symmetry results and results for 3D-2D structures that are coupled using the Fourier Multi Harmonic and 3D Coupling simulation object, use the Results Recombination command. You can also use the Results Recombination command to recover all sectors of a 3D cyclic symmetry sector that is not coupled to a 2D axisymmetric structure.

• For uncoupled 3D cyclic symmetry models, the Results Recombination command visualizes all sectors of the 3D cyclic symmetry structure.

• For structures that are coupled with the Fourier Multi Harmonic and 3D Coupling simulation object, the Results Recombination command lets you select different combinations of results to recombine.The following figure shows the original 2D axisymmetric structure coupled with a 3D cyclic symmetry sector using the Fourier Multi Harmonic and 3D Coupling simulation object.(1) 3D cyclic symmetry sector and (2) 2D axisymmetry connected with (3) Fourier Multi Harmonic and 3D CouplingUsing the Results Recombination command, you can visualize:All sectors of the 3D cyclic symmetry structure with the original 2D axisymmetric structure.(1) 3D cyclic symmetry sectors recombined and (2) original 2D axisymmetric structure visualized with Results RecombinationAll sectors of the 3D cyclic symmetry structure with the fully revolved 2D axisymmetric structure.(1) 3D cyclic symmetry sectors recombined and (2) revolved 2D axisymmetric structure visualized with Results RecombinationThe full 3D structure (no cyclic symmetry) with its coupled, fully revolved 2D axisymmetric structure.

The Results Recombination command generates a new results file that you can open from the Post Processing Navigator to access the combined results.

Results recombination options and prerequisites

The following table describes your options when you use the Results Recombination command.

Results Recombination option	Purpose	Prerequisites
Cyclic Recombination Only	Recombines all 3D sectors of a 3D cyclic symmetry structure. Use this option when your model uses 3D cyclic symmetry alone or coupled to a 2D axisymmetric structure using the Fourier Multi Harmonic and 3D Coupling simulation object.	The Nonlinear Control Parameters - Global modeling object is defined with Generate Restart Point (RSTGEN) set to Yes.To recombine a 3D cyclic symmetry structure coupled with a 2D axisymmetric structure using Fourier Multi Harmonic and 3D Coupling simulation object, you must also set the Fourier Harmonic Post-Processing Recombination Mode (FHPOST) solution parameter to 2D Results at 0 Degree + 3D Results.
Cyclic Recombination with Full Model	Recombines the 3D sectors of a 3D cyclic symmetry structure and a 2D axisymmetric structure that are coupled using the Fourier Multi Harmonic and 3D Coupling simulation object.Use this option when you want to visualize the entire model in 3D.	The 3D cyclic symmetry structure and the 2D axisymmetric structure are coupled using the Fourier Multi Harmonic and 3D Coupling simulation object.The Fourier Harmonic Post-Processing Recombination Mode (FHPOST) solution parameter is set to 2D Results at 0 Degree + 3D Results.The Nonlinear Control Parameters - Global modeling object is defined with Generate Restart Point (RSTGEN) set to Yes.
2D-3D Merge Only	Recombines a 2D axisymmetric structure that is coupled to a full 3D structure using the Fourier Multi Harmonic and 3D Coupling simulation object. Use this option when you want to visualize the 2D axisymmetric structure fully revolved to 360 degrees.	The full 3D structure and the 2D axisymmetric structure are coupled with the Fourier Multi Harmonic and 3D Coupling simulation object.The Fourier Harmonic Post-Processing Recombination Mode (FHPOST) solution parameter is set to 2D Results at 0 Degree + 3D Results.

Where do I find it?

Application	Pre/Post
Prerequisites	A Simulation file as the work part and displayed partSimcenter Nastran as the specified solverRotor Dynamics as the specified analysis typeOne of the following as the specified solution type:SOL 414,101 ManeuversSOL 414,103 Eigenvalue and Superelement ReductionSOL 414,110 Complex Modal Analysis****SOL 414,129 Transient ResponseOther prerequisites apply depending on how you plan to use the Results Recombination command. See Results combination options and prerequisites above.
Command Finder	Results Recombination

Post-processing 3D cyclic symmetry and 2D axisymmetric results for a rotor dynamic analysis (SOL 414), Simcenter 3D 2021.1 Series

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