Identification of Nonlinear Structural Dynamic Systems Using Wavelets
Publication: Journal of Engineering Mechanics
Volume 124, Issue 10
Abstract
This paper addresses the use of wavelets in the identification of nonlinear structural dynamic systems. The proposed method accurately determines hysteresis curves and damping coefficients of the structural system without the need for prior assumptions about the nonlinear characteristics of the system, thereby enabling us to clarify complex phenomena occurring in nonlinear behavior. The tangent stiffness of the structural system is expressed as a series expansion of wavelets. The coefficients of the series are estimated by means of the least-squares method. This identification method has been applied to numerical and experimental results under earthquake motion, demonstrating its effectiveness and applicability.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 124 • Issue 10 • October 1998
Pages: 1059 - 1066
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Oct 1, 1998
Published in print: Oct 1998
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