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Probabilistic structural analysis of adaptive/smart/intelligent space structuresA three-bay, space, cantilever truss is probabilistically evaluated for adaptive/smart/intelligent behavior. For each behavior, the scatter (ranges) in buckling loads, vibration frequencies, and member axial forces are probabilistically determined. Sensitivities associated with uncertainties in the structure, material and load variables that describe the truss are determined for different probabilities. The relative magnitude for these sensitivities are used to identify significant truss variables that control/classify its behavior to respond as an adaptive/smart/intelligent structure. Results show that the probabilistic buckling loads and vibration frequencies increase for each truss classification, with a substantial increase for intelligent trusses. Similarly, the probabilistic member axial forces reduce for adaptive and intelligent trusses and increase for smart trusses.
Document ID
19920013024
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Pai, Shantaram S. (NASA Lewis Research Center Cleveland, OH, United States)
Chamis, Christos C. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1991
Subject Category
Structural Mechanics
Report/Patent Number
NASA-TM-105408
NAS 1.15:105408
E-6637
Accession Number
92N22267
Funding Number(s)
PROJECT: RTOP 533-13-00
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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