1982-02-01

System Identification Using Sinusoidal Test Data 821460

System identification--the refinement of an analytical model to match test data--is presented as it pertains to dynamic testing via sinusoidal shakers. Each phase of the system identification process is illustrated: pretest model formulation, sinusoidal testing, eigenparameter identification, and post-test model refinement.
Examples are shown from full-scale sinusoidal tests on actual structures. Also included is a brief discussion of structural non-linearities and their effects on results obtained from the system identification process.

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