An Implicit Fourier Transform Method for Nonlinear Dynamic Analysis with Frequency Dependent Damping

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Report Number: WL-TR-91-3078 Volume I, p. BCB-1 thru BCB-16
Author(s): Venancio-Filho, F., Claret, A. M.
Corporate Author(s): Rutgers, The State University of New Jersey, School of Mines, Federal University of Ouro Preto, MG, Brazil
Laboratory: Wright Laboratory
Date of Publication: 1991-08
Pages: 16
Contract: Laboratory Research - No Contract
DoD Project: 2401
DoD Task: 240104
Identifier: This paper is part of a conference proceedings. See ADA241311

Abstract:
The SILFD (Step-by-step Incremental Linearization Frequency Domain) method for the frequency domain analysis of nonlinear structural systems with frequency dependent damping, described in Venancio-Fiiho and Claret [1989] is implemented in this work through the IFT (Implicit Fourier Transform) algorithm, Venancio-Filho and Claret [1991]. A new and more efficient process for the consideration of the initial conditions in the SILFD method is presented. Numerical examples are presented which show the applicability of the proposed method .

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