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A comparison of refined models for flexible subassembliesInteractions between structure response and control of large flexible space systems have challenged current modeling techniques and have prompted development of new techniques for model improvement. Due to the geometric complexity of envisioned large flexible space structures, finite element models (FEM's) will be used to predict the dynamic characteristics of structural components. It is widely accepted that these models must be experimentally 'validated' before their acceptance as the basis for final design analysis. However, predictions of modal properties (natural frequencies, mode shapes, and damping ratios) are often in error when compared to those obtained from Experimental Modal Analysis (EMA). Recent research efforts have resulted in the development of algorithmic approaches for model improvement, also referred to as system or structure identification.
Document ID
19930009644
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Smith, Suzanne Weaver
(Kentucky Univ. Lexington, KY, United States)
Zimmerman, David C.
(Florida Univ. Gainesville., United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1993
Publication Information
Publication: NASA. Langley Research Center, The Fifth NASA(DOD Controls-Structures Interaction Technology Conference, Part 1
Subject Category
Spacecraft Design, Testing And Performance
Accession Number
93N18833
Funding Number(s)
CONTRACT_GRANT: NAG1-1246
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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