A spatially periodic structure is a longitudinal array of identical substructures. A method of free and forced vibration analysis of periodic structures with simply supported and guided ends is presented. The computational effort required roughly equals the effort to analyze a single substructure. All natural modes and frequencies ofan extensive structure can be found from a characteristic equation of order equal to the degrees of freedom on one substructure boundary. A modal reduction further simplifies the computations; applications are presented. The method is expected to be useful in structural vibration, sound transmission, and sonic fatigue analysis.
Vibrating Spatially Periodic Structures with Simply Supported and Guided Ends
Sae Technical Papers
Aerospace Meeting ; 1979
1979-02-01
Conference paper
English
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