NASA NTRS · 19800000237
Vibration modes and frequencies of structures
Abstract
SUDAN, Substructuring in Direct Analysis, analyzes natural modes and frequencies of vibration of structural systems. Based on direct method of analysis that employs substructures methodology, program is used with structures that may be represented as equivalent system of beam, springs, and rigid bodies.
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Durling, R. J., Kvaternik, R. G.. 1980-09-01. Vibration modes and frequencies of structures. https://ntrs.nasa.gov/citations/19800000237
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