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

Safia Bedaoui , Hamid Afra , Pierre Argoul (1, 2)

1 Dynamique des structures et identification
2 navier umr 8205 - Laboratoire Navier

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.

Domaines: Génie civil

Safia Bedaoui, Hamid Afra, Pierre Argoul. Direct identification of modal parameters using the continuous wavelet transform, case of forced vibration. Earthquakes and Structures, 2014, 6 (4), pp.393-408. ⟨10.12989/eas.2014.6.4.393⟩. ⟨hal-01157352⟩