Time to Waterfall of Time dialog box

If you are using this dialog box in Motion, see Transforming time-domain to frequency for more information.

Description
Operation Name	Sets the name for the operation.
RPM Step Definition
Lets you define the pseudo-stationary RPM values that you want to use to divide your time signal (which the software takes from the data source) and calculate the responses at these RPM values.
Start	Sets the first pseudo-stationary RPM value.For more information, see Additional magnitude options.
End	Sets the last pseudo-stationary RPM value.For more information, see Additional magnitude options.
Step	Sets the RPM step size that computes all the pseudo-stationary RPM values between the start and end values.For more information, see Additional magnitude options.Note: In Motion, if the active solution is a discrete speed-sweep solution (that is, a solution with a discrete speed-sweep driver selected as the print interval definition), the Start, End, and Step values default to the Start Velocity, End Velocity, and Velocity Increment values, respectively, in the Speed-sweep Driver dialog box. For more information, see 2. Add operations.
Advanced
Relative Tolerance (%)	Lets you specify the relative tolerance to use for the calculation. The relative tolerance is useful when the signal contains deviations because it lets you define the limits of the deviations that the pre-solver accepts.
Frame Size Definition
Lets you define the frame size the software uses to identify the time segments that correspond to each RPM that you define in the Step Definition group and the time pair from the RPM signal that you define in the Select the RPM Function group.
Type	Specifies the type of definition that you want to use to define the frame size either in terms of samples or time.
Samples	Appears when Type is set to Samples.Sets the number of samples from the time signal to consider in a frame.Note: In Motion, if the active solution is a discrete speed-sweep solution (that is, a solution with a discrete speed-sweep driver selected as the print interval definition), the Samples value defaults to the product of the Steady-state Rotations and Steady-State Print Steps values in the Speed-sweep Driver dialog box. For more information, see 2. Add operations.
Time	Appears when Type is set to Time.Sets the time length of the frame.For more information, see Additional magnitude options.
Advanced
Relative Tolerance (%)	Lets you specify the relative tolerance to use for the calculation. The relative tolerance is useful when the signal contains deviations because it lets you define the limits of the deviations that the pre-solver accepts.
Select the RPM Function
Select the RPM Function	RPM functions are selected from the input file based on the following criteria:Data is in the SORT2 format (function).The function is time dependent.The Y-axis is either RPM, angular velocity, or frequency.From FileLets you select the RPM function from a file.From FieldLets you use a field to specify the RPM time signal.For example, use this option to assist with the time to waterfall of time conversion of, for example, pre-computed vibrations of rotating bodies. The time-dependent data can originate from any input file except a Motion file.
Filter	Appears when Select the RPM Function is set to From File.Filters the available angular velocity-time curves for the selected data set. For example, to list only the curves with names starting with the Block string, type Block* and press Enter.
Table of angular-velocity curves	Lets you manage the angular velocity-time curves. Right-click a column heading or empty table cell and choose Export to Browser to view the names and marker positions in a different format, or Export to Spreadsheet to save the names and marker positions in a separate file.
Specify Field	Appears when Select the RPM Function is set to From Field.Specifies the angular velocity-dependent field values.Options include:Select Existing Field from List opens the Fields dialog box, where you can select a field.A field can define a magnitude that varies with independent variables such as frequency, temperature, or time. For more information about fields, see Fields.Formula Constructor opens the Formula Field dialog box, where you can define a formula to construct a field.For more information, see Define a boundary condition using a formula field.Table Constructor opens the Table Field dialog box, where you can define tabular data to construct a field.For more information, see Define a boundary condition using a table field and Define a material property using a table field.Plot (XY) plots the field as an XY graph.For more information, see Graph overview.Overlay (XY) overlays a plot on an existing plot. You can overlay up to 50 plots.For more information, see Overlay plots.

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Processing Motion results for use in a vibro-acoustic response

Transforming time-domain to frequency

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Time to Waterfall of Time dialog box, Simcenter 3D 2021.1 Series

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