Difference between revisions of "Modal practical"

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# Preliminary determination of the number of modes in the selected frequency band according to the MIF plot, and fill it in the edit box of "Preset Modes No." Then the BroBand software will calculate a default "minimum order" according to this number. The relationship between "Preset Modes No." and "Minimum Order" is: minimum order = (preset modes No)*Ni/2, where Ni means the number of input. Change the number of "Order Span" if necessary. The BroBand software will estimate the poles with a range of system order from "Minimum Order" to "Maximum Order", where Maximum order= Minimum order <nowiki>+</nowiki> Order Span-1. The default order span is 12.

To visualize the list of the modes, double click on `EMA: BroBand The list of results will be displayed. By right clicking on a mode and  selecting  `animate<nowiki>’</nowiki>,  the  corresponding  mode  shape  will  be showed.

The first way to check the results is to look at the coherence between the experimental FRFs and the synthesized ones in the selected frequency band.

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The project can be saved in a workspace containing data, geometry, results… It<nowiki>’</nowiki>s also possible to save independently each part of a project.