This spreadsheet is where all modal parameter estimates are displayed.
Each row of the spreadsheet contains modal parameter estimates for one mode.
Modal Parameters Spreadsheet
Click on the Select Mode button to toggle the mode selection.
Double click on the Select Mode column heading to toggle the selection of all modes.
Select a mode, hold down the Shift key, and select the second mode to select a range of modes.
Modal frequency is always listed as the damped natural frequency.
The damped natural frequency is approximately equal to the peak frequency of the resonance peak in the FRF data.
Modal damping can be listed is two columns, either as the percent of critical damping (in %) or the half power point damping (in Hz).
The residue for each mode is listed as magnitude & phase.
The magnitude units are the units of the FRF times (radians per second). For example, if the FRF units are (g/ N), the residue units are (g/ N-sec)
Phase units are in degrees.
The curve fitting methods used to estimate the parameters of each mode are listed in the Frequency & Damping Method column, and the Residues Method column. The following abbreviations are used for the curve fitting methods in the Basic Modal Analysis option,
"Local-Poly" Local Polynomial
"Global-Poly" Global Polynomial
"Peak" Peak method
"Poly" Polynomial
These two columns contain the Band cursor positions that were used for Frequency & Damping curve fitting and for Residue curve fitting.
All columns can be shown or hidden (except the Select column).
Right click on the Modal Parameters spreadsheet, and select Show/Hide Columns from the menu.
The File | Data Block Options box will open displaying the Show/Hide tab.
Un-check columns to hide them and check columns to show them.
Right click on the Modal Parameters spreadsheet, and execute Reset Column Widths from the menu.
Select the text in one or more spreadsheet cells.
Hold down the Ctrl key and,
Press the X key to cut the selected text to the Clipboard.
Press the C key to copy the selected text to the Clipboard.
Press the V key to paste text from the Clipboard into the selected cells.