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A global approach for the identification of structural connection propertiesA general procedure is developed for identifying properties of structural joints. The procedure, which uses experimental response data, is considered general because it is applicable to any size or type of structural system. The present procedure, which identifies characteristics such as damping and stiffness, accommodates both linear and nonlinear joint properties and may process test data measured at arbitrary stations on the structural system. The method identifies joint characteristics by performing a global fit between predicted and measured data. It overcomes limitations of previous methods in that it can better deal with parameter-dependent constraints (e.g., gaps). The method is demonstrated with a simplified model of a bladed disk assembly having friction damping and mistuning.
Document ID
19900009429
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Lawrence, Charles (NASA Lewis Research Center Cleveland, OH., United States)
Huckelbridge, Arthur A. (Case Western Reserve Univ. Cleveland, OH., United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1990
Subject Category
Structural Mechanics
Report/Patent Number
NAS 1.15:102502
NASA-TM-102502
E-5303
Accession Number
90N18745
Funding Number(s)
PROJECT: RTOP 505-63-1B
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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