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Direct system parameter identification of mechanical structures with application to modal analysisIn this paper a method is described to estimate mechanical structure characteristics in terms of mass, stiffness and damping matrices using measured force input and response data. The estimated matrices can be used to calculate a consistent set of damped natural frequencies and damping values, mode shapes and modal scale factors for the structure. The proposed technique is attractive as an experimental modal analysis method since the estimation of the matrices does not require previous estimation of frequency responses and since the method can be used, without any additional complications, for multiple force input structure testing.
Document ID
19820046649
Document Type
Conference Proceedings
Authors
Leuridan, J. M. (Cincinnati Univ. OH, United States)
Brown, D. L. (Cincinnati Univ. OH, United States)
Allemang, R. J. (Cincinnati, University Cincinnati, OH, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Subject Category
STRUCTURAL MECHANICS
Report/Patent Number
AIAA PAPER 82-0767
Meeting Information
In: Structures, Structural Dynamics and Materials Conference(New Orleans, LA)
Funding Number(s)
CONTRACT_GRANT: NSG-1486
Distribution Limits
Public
Copyright
Other