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A nonparametric identification method for a class of non-linear systems (1981)

Garba, J. A. ; Udwadia, F. E. ; Kuo, C. P.

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Publication Date: 2019-07-13

Description: A relatively simple nonparametric method for the identification of a class of close-coupled nonlinear multi-degree-of-freedom systems has been developed. The identification of arbitrary memoryless nonlinearities is possible through knowledge of the accelerations, velocities, and displacements of the various masses. These quantities are used to obtain the surfaces of the restoring forces as functions of the intermass displacements and velocities. The method was demonstrated by application to a four-degree-of-freedom system to identify the restoring forces. It is found that the identification results are relatively insensitive to measurement noise.

Keywords: STRUCTURAL MECHANICS

Type: AIAA PAPER 81-0527 , Conference on Structures, Structural Dynamics and Materials; Apr 06, 1981 - Apr 08, 1981; Atlanta, GA

Format: text

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