FRAC plots

You can generate graphs of the Frequency Response Assurance Criterion (FRAC) to evaluate the degree of correlation between the selected work and reference frequency response function pairs.

FRAC

Displays the FRAC for each of the selected FRF pair as a function of the stretch parameter.

FRAC plot for three FRF pairs

FRAC Color Bar

Displays the FRAC in the color bar plot format. Color bars are useful when you want to assess the mass and stiffness trends of multiple FRF pairs at a glance.

FRAC color bar plot for three FRF pairs

Overlay FRFs

Overlays work and reference FRFs at the selected stretch factor beta.

Where do I find it?

Display FRAC results in the XY plot

Application	Pre/Post
Prerequisite	An FRF correlation solution process
Simulation Navigator	FRF Pairing node(Correlation Details View subpanel) Right-click one or more FRF pairs→Plot FRAC or Apply FRAC→FRAC

Display FRAC results in the color bar plot

Application	Pre/Post
Prerequisite	An FRF correlation solution process
Simulation Navigator	FRF Pairing node(Correlation Details View subpanel) Right-click one or more FRF pairs→Plot FRAC or Apply FRAC→FRAC Color Bar

Display overlay FRFs at specified stretch factor beta

Application	Pre/Post
Prerequisite	Displayed FRAC XY plot
Command Finder	Probing Mode
Graphics window	Right-click the help line in the FRAC XY plot→Overlay FRFs

How do I

Display correlation metrics as 2D matrix plots

Edit 2D matrix plot display

Export correlation metric results

Display COMAC results in Post Processing

Plot mode shapes of the work and reference solutions

Display the MAC Contribution results

Display overlay FRFs at specified stretch parameter

Learn more

Correlation metrics

MAC Contribution

MODMAC Evolution

FRF pair XY plots

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

FRAC plots, Simcenter 3D 2021.1 Series

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