A method is proposed for performing an orthogonality check for normal modes derived from ground vibration testing. The method utilizes partitioned mass and stiffness matrices for a linear undamped representation of a structure. The normalization of the modes by the proposed method inherently includes the effects of significant displacements which were not measured; and the method may allow the use of fewer measurement points than would be necessary with the conventional method.
Improved orthogonality check for measured modes
AIAA Journal ; 18
1980-09-01
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Englisch
Improved orthogonality check for measured modes
AIAA | 1980
|Orthogonality Check and Correction of Measured Modes
AIAA | 1976
|