Direct identification of modal parameters using the continuous wavelet transform, case of forced vibration

Safia Bedaoui , Hamid Afra , Pierre Argoul

Abstract

In this paper, a direct identification of modal parameters using the continuous wavelet transform is proposed. The purpose of this method is to transform the differential equations of motion into a system of algebraic linear equations whose unknown coefficients are modal parameters. The efficiency of the present method is confirmed by numerical data, without and with noise contamination, simulated from a discrete forced system with four degrees-of-freedom (4DOF) proportionally damped.

Key Words

modal identification; dynamics of structures; forced vibration; continuous wavelet transform

Address

Safia Bedaoui, Pierre Argoul — Laboratoire Navier (ENPC/IFSTTAR/CNRS), Ecole des ponts Paris Tech, Universite Paris Est, 6 & 8 Avenue Blaise Pascal, Champs-sur-Marne, 77455 Marne-la-Vallee Cedex 2, France
Safia Bedaoui — Faculty of Civil Engineering, Houari Boumedienne Science & Technology University (USTHB), EL Alia, Bab Ezzouar, Alger, Algeria / Department of Civil Engineering, Faculty of Engineer Sciences, M

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