Recover superelements (SOL 414)

Use this procedure to recover superelement results and visualize the superelement representation as the original model.

This procedure requires that:

• Generate Restart Point (RSTGEN) is set to Yes in the Nonlinear Control Parameters - Global modeling object.Setting this option ensures that the solver retains the intermediate .u18 files in addition to the .sdb results files. The .u18 files are required to recover the superelements. The solver uses the .sdb and _dy.u18 files from the superelement creation analysis, and the .sdb and .u18 files from the analysis that uses the superelement.

• You solved the model with the superelements.

1. Make the Simulation file the work part and the displayed part.

2. If a results file is open, close it by right-clicking the results node in the Post-Processing Navigator and choosing Unload.The results generated by the Superelement Recovery command can open only when no results are loaded.

3. Choose Rotor Dynamics tab→Rotor Results group→Superelement Recovery.

4. In the Superelement Recovery dialog box, ensure that the location of the Samcef solver executable file is correct.The Superelement Recovery command creates and solves Samcef solutions to recover the superelements you request.

5. Next to the .des File box, click Browse to navigate to the model_name-solution_name_ro.des file that contains the results of the analysis that used the superelements.

6. Click Read Superelement Information.The Superelement Selection table is populated with the superelements used in the specified results file.If you specified a results file that was generated on another computer and the superelement .sdb file cannot be found at the inferred path, you can change the path. In the table, click the superelement whose .sdb path you want to change, and type or browse to the new path in the Modify Sdb File Path box.

7. In the References Selection group, do one of the following:To recover all of the results, select the Select All References check box.To recover only selected results, clear the Select All References check box, and in the table, select the results you want to recover.The available results vary depending on the solution.Vibration modes for SOL 414,103 eigenvalues analysisRotor speeds steps for SOL 414,110 complex modal analysisFrequency steps for SOL 414,111 harmonic response analysisTime steps for SOL 414,129 transient response analysis

8. If you previously recovered superelements and now want to recover them in a different combination, in the Recovery Deck File Name box, type a new name or click Browse to navigate to a different directory.

9. Click OK.A command prompt window opens, and the Samcef solver generates the new results file for visualizing the recombined model. The results file is ready when the command prompt window closes.

10. In the Post Processing Navigator, right-click the Imported Results node and choose Import Results.

11. In the Import Result dialog box, in the File box, type the path and file name, or click Browse to navigate to the directory that contains the file.The new results file is named the same as the input (.dat) file but with the .des file name extension.

12. To change the results name from the default, in the Name box, type the name under which you want the imported results to appear.

13. Click OK.

14. Under the Imported Results node, expand the results and post-process them as you normally do.

15. To adjust the phase angle for complex modes, choose Results tab→Post View group→Edit Post View and do the following.On the Deformation tab, in the Complex Options group, from the Complex list, select At Phase Angle. On the Result tab, in the Complex Options group, from the Complex list, select At Phase Angle.

Recover superelements (SOL 414), Simcenter 3D 2021.1 Series

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