DAMPING IDENTIFICATION IN MULTI-DEGREE-OF-FREEDOM SYSTEM VIA A WAVELET-LOGARITHMIC DECREMENT--PART 2: STUDY OF A CIVIL ENGINEERING BUILDING

Stéphane Hans (1) , E. Ibrahim (1) , Stéphane Pernot (1) , Claude Boutin (1) , Claude-Henri Lamarque (1)

1 DGCB - Département Génie Civil et Bâtiment

In a previous paper entitled "Damping identification in multi-degree-of-freedom (m.d.o.f.) systems via wavelet-logarithmic decrement--Part 1: theory", a wavelet-logarithmic decrement formula was established to estimate damping in multi-degree-of-freedom systems from time-domain responses. Numerical validation was then investigated using the dynamic response of exact single-degree-of-freedom systems that were artificially perturbed with a Gaussian noise. Part 2 is now dedicated to the application of the wavelet procedure to identify the damping of in situ dynamic responses of a civil engineering building excited with both harmonic and shock testings.

Domaines: Vibrations [physics.class-ph]; Vibrations [physics.class-ph]

Stéphane Hans, E. Ibrahim, Stéphane Pernot, Claude Boutin, Claude-Henri Lamarque. DAMPING IDENTIFICATION IN MULTI-DEGREE-OF-FREEDOM SYSTEM VIA A WAVELET-LOGARITHMIC DECREMENT--PART 2: STUDY OF A CIVIL ENGINEERING BUILDING. Journal of Sound and Vibration, 2000, 235 (3), pp.375-403. ⟨10.1006/jsvi.1999.2927⟩. ⟨hal-00814693⟩