The use of random decrement technique for identification of structural modes of vibrationAn algorithm is developed to obtain the free responses of a structure from its random responses due to some unknown or known random input or inputs, using the random-decrement technique without changing time correlation between signals. The algorithm is tested using random responses from a 'generalized payload' model and from the 'Space Shuttle' model. The resulting free responses are then used to identify the modal characteristics of the two systems.
Document ID
19770042927
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Ibrahim, S. R. (Old Dominion University Norfolk, Va., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1977
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 77-368
Meeting Information
Meeting: Conference on Structures, Structural Dynamics and Materials