Solution Step dialog box (Simcenter Nastran SOL 414 Rotor Dynamics)

Use this dialog box to set options for subcases in any of the SOL 414 Rotor Dynamics solutions.

Options common to all SOL 414 solution types

Solution
Name	Sets a name for the step.
Properties
Description	Lets you enter a description for the step.
Use Step Name as Label	Select to use the text in the Name box as the label for the step.
Label	Available when the Use Step Name as Label check box is cleared.Lets you enter the label for the step.
Case Control User Defined Text	Selects text to include within the subcase in the Simcenter Nastran input file.Select an existing modeling object from the list or click Create Modeling Object to create a new modeling object.To filter a long list of modeling objects, click More Options to display options for searching and filtering the modeling objects.After you select a modeling object, click Edit to edit it.

SOL 414,101 Maneuvers and SOL 414,103 Eigenvalues and Superelement Reduction (Subcase - Static Loads)

Boundary Condition Control Variables
Evaluation Time	Lets you define the time at which the loads will be evaluated for the Mechanical Loads Summary.
Evaluation Frequency	Lets you define the frequency at which the loads will be evaluated for the Mechanical Loads Summary.

SOL 414,110 Complex Modal and SOL 414,103 Eigenvalues and Superelement Reduction (Subcase - Eigenvalues and Superelement)

Properties
Create Rotation Speeds	Appears when Solution is set to SOL 414,110 Complex Modal and Step is set to Subcase - Modal Complex.Lets you select an existing rotation speeds modeling object or create one.
Modal Analysis
Appears when Step is set to Subcase - Modal Complex or Subcase - Eigenvalues and Superelement.
Real Eigenvalue Method	Specifies the real eigenvalue extraction parameters.Select an existing modeling object from the list or click Create Modeling Object to create a new modeling object.To filter a long list of modeling objects, click More Options to display options for searching and filtering the modeling objects.After you select a modeling object, click Edit to edit it.
Complex Eigenvalue Method	Specifies the complex eigenvalue extraction parameters.Select an existing modeling object from the list or click Create Modeling Object to create a new modeling object.To filter a long list of modeling objects, click More Options to display options for searching and filtering the modeling objects.After you select a modeling object, click Edit to edit it.
Mode Selection	Specifies which of the calculated real modes to use to obtain the reduced system for which the complex modes are calculated.Select an existing modeling object from the list or click Create Modeling Object to create a new modeling object.To filter a long list of modeling objects, click More Options to display options for searching and filtering the modeling objects.After you select a modeling object, click Edit to edit it.
Boundary Condition Control Variables
Appears when Step is set to Subcase - Static Loads.
Evaluation Time	Lets you define the time at which the loads will be evaluated for the Mechanical Loads Summary.
Evaluation Frequency	Lets you define the frequency at which the loads will be evaluated for the Mechanical Loads Summary.

SOL 414,111 Harmonic Response

Solution
Create Forcing Frequencies	Appears when Step is set to Subcase - Frequency Response.Lets you select an existing forcing frequencies modeling object or create one.
Solution Scheme	Appears when Step is set to Subcase - Frequency Response.Specifies whether the frequency response solve for the subcase is direct or modal.
Modal Analysis
Appears when Solution Scheme is set to Modal.
Real Eigenvalue Method	Specifies the real eigenvalue extraction parameters.Select an existing modeling object from the list or click Create Modeling Object to create a new modeling object.To filter a long list of modeling objects, click More Options to display options for searching and filtering the modeling objects.After you select a modeling object, click Edit to edit it.
Mode Selection	Specifies which of the calculated real modes to use to obtain the reduced system for which the complex modes are calculated.Select an existing modeling object from the list or click Create Modeling Object to create a new modeling object.To filter a long list of modeling objects, click More Options to display options for searching and filtering the modeling objects.After you select a modeling object, click Edit to edit it.
Boundary Condition Control Variables
Evaluation Time	Lets you define the time at which the loads will be evaluated for the Mechanical Loads Summary.
Evaluation Frequency	Appears when Step is set to Subcase - Static Loads.Lets you define the frequency at which the loads will be evaluated for the Mechanical Loads Summary.

SOL 414,129 Transient Response (Subcase - Nonlinear Dynamics) and SOL 414,103 Eigenvalues and Superelement Reduction (Subcase - Transient Preload)

Properties
Nonlinear Control Parameters (NLCNTL2)	Appears when Step is set to Subcase - Transient Preload.Specifies a modeling object to define parameters that control the iteration strategy for the analysis. Select an existing modeling object from the list or click Create Modeling Object to create a new modeling object.To filter a long list of modeling objects, click More Options to display options for searching and filtering the modeling objects.After you select a modeling object, click Edit to edit it.
Time Step Definition
Appears when Step is set to Subcase - Nonlinear Dynamics or Subcase - Transient Preload.
End Time	Sets the ending time for the transient response analysis.Note: The transient response analysis begins at time equal to zero.
Number of Increments	Sets the number of time steps in the transient response analysis.
Output Flag	Specifies the time steps at which output occurs.Requested IncrementsProduce output at each of the time steps that occur because of the Number of Increments specification.Solution Step End TimeProduce output at the last time step only.All TimesProduce output at each of the time steps that occur because of the Number of Increments specification, and any time steps that result from the software sub-incrementing or bisecting the time steps that occur because of the Number of Increments specification.Skip FactorProduce output at some of the time steps that occur because of the Number of Increments specification.For example, if Skip Factor is set to 2, after a time step where output occurs, the next two time steps do not have output, unless one of them is the last time step.
Skip Factor	Appears when Output Flag is set to Skip Factor.Specifies the number of time steps that occur between time steps that produce output.
Boundary Condition Control Variables
Evaluation Frequency	Lets you define the frequency at which the loads will be evaluated for the Mechanical Loads Summary.

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Rotor dynamic analysis (SOL 414)

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Solution Step dialog box (Simcenter Nastran SOL 414 Rotor Dynamics), Simcenter 3D 2021.1 Series

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