Saving Shapes

After all curve fitting has been completely, the modal parameter estimates in the Modal Parameters spreadsheet can be saved into a Shape Table.

• Press the Save Shapes button on the Residues, Save Shapes tab.

• Press the New File button in the dialog box that opens to create a new Shape Table.

• Enter "My Mode Shapes" into the next dialog box that opens, and click on OK.

The Shape Table window will open, listing the mode shapes of the 10 modes of the Jim Beam obtained from the Quick Fit. Notice that the mode shapes are called Residue Mode Shapes. The Residue for each mode and each FRF An FRF (Frequency Response Function) is a cross-channel frequency domain function that defines the dynamic properties of a structure between an excitation Force and the Response caused by that force. An FRF is defined as the ratio (Response DFT / Force DFT). The FRF is a special case of a Transfer Function, where the response is the numerator (Output) and the force is the denominator (Input). is a component of the Residue Mode Shape for that mode.

Shape Table Showing 10 Mode Shapes.