PEAKOUT Criteria dialog box

This modeling object corresponds to the PEAKOUT bulk entry.

Modeling Object
Name	Sets the name for the peak output criteria that you are creating.
Label	Specifies a unique numerical identifier for the peak output criteria.
Properties
Description	Sets the description for the peak output criteria that you are creating. This description appears in the Simulation Navigator.To enter a long description, click to open a text editor.
Criteria
Response Type	Specifies the type of frequency response results to which to apply the peak output criteria.
Maximum Number of Peaks	Specifies the number of peak responses to select from the responses that remain after the Minimum Distance between Peaks, Maximum Distance between Peaks, Starting Frequency, and Ending Frequency criteria are applied to the frequency response results.
Minimum Distance between Peaks	Specifies the minimum allowable frequency difference between adjacent peak responses.
Maximum Distance between Peaks	Specifies the value that is used to create frequency ranges that are centered around each response that is retained after applying the Starting Frequency, Ending Frequency, Minimum Distance between Peaks, Maximum Number of Peaks, and minimum cutoffs for individual DOF criteria. The span of these frequency ranges is twice the value that you specify in the Maximum Distance between Peaks box. If a response was excluded from the peak responses search because of the requested number of peaks criterion, but the excluded response lies outside these frequency ranges, it is recovered and added to the peak responses.For a detailed explanation of how the software applies this criterion, see the remarks for the FAR field in the PEAKOUT bulk entry.
Starting Frequency	Specifies the frequency below which the frequency response results are excluded from the peak responses search.
Ending Frequency	Specifies the frequency above which the frequency response results are excluded from the peak responses search.
Nodes
Group Reference	Selects a group from which to obtain the frequency responses for the nodes explicitly listed in the group. The software applies the filtering criteria to these frequency responses to obtain the peak responses.For more information, see Group Reference options.
Select Node	Selects the nodes from which to obtain the frequency responses. The software applies the filtering criteria to these frequency responses to obtain the peak resonances.
Minimum Cutoff Response Level
DOF1 thru DOF6	Appears when Response Type is set to Displacement, Velocity, or Acceleration.Specifies the amplitude of the response for the corresponding DOF below which the response is excluded from the peak responses search.
Pressure Unit	Appears when Response Type is set to Pressure.Selects whether the sound pressure level cutoff is expressed in units of pressure such as MPa, or in dB or dBA.
Sound Pressure Level	Appears when Pressure Unit is set to dB or dBA.Specifies the sound pressure level in dB or dBA below which the response is excluded from the peak responses search.
dB Reference	Appears when Pressure Unit is set to dB or dBA.Specifies the reference pressure to use in dB and dBA calculations as follows:dB = 20{\log {10}}\left( {\frac{P}{{{P{ref}}}}} \right) dBA = 20{\log {10}}\left( {\frac{P}{{{P{ref}}}}} \right) + 20{\log _{10}}\left( {{R_A}\left( f \right)} \right) + 2where P is the measured sound pressure and Pref is the reference sound pressure. The A-weighting function, RA(f), is given as follows:{R_A}\left( f \right) = \frac{{{{12194}^2} \cdot {f^4}}}{{\left( {{f^2} + {{20.6}^2}} \right)\sqrt {\left( {{f^2} + {{107.7}^2}} \right)\left( {{f^2} + {{737.9}^2}} \right)} \left( {{f^2} + {{12194}^2}} \right)}}
Value	Appears when Pressure Unit is set to Pressure Unit.Specifies the sound pressure level below which a response is excluded from the peak responses search.

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Limiting frequency response output to peak responses

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PEAKOUT Criteria dialog box, Simcenter 3D 2021.1 Series

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