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Experimental study of a tuned mass damper endowed with changeable stiffness and eddy currents damping

Abstract : The Tuned Mass Damper (TMD) is a structural passive control device attached on a structure and made by a linear oscillator which natural frequency is tuned to that of the structure, or to the dominant eigenfrequency. In this study, an experimental TMD with adjustable stiffness and damping is proposed. In particular, the TMD damping arises from the eddy current damping effect due to the presence of a permanent magnet placed on the top side of the TMD mass, which is made of conductive material. The first step is to check if the dynamical properties of the proposed TMD are constant during the dynamic test and for different values of stiffness and damping. Therefore, the instantaneous modal parameters are evaluated by applying the continuous wavelet transform on the experimental data. Then, the TMD is set with optimal parameters and used to control vibrations of a frame scale model. The structure response with and without the TMD is evaluated from the experimental measurements in case of shock at the top floor, and a numerical analysis is conducted in case of seismic ground acceleration. MOTS-CLÉS : AMA, courants de Foucault, transformée en ondelettes continue, control passif.
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https://hal.archives-ouvertes.fr/hal-01424493
Contributor : Stefania Lo Feudo <>
Submitted on : Monday, January 2, 2017 - 2:15:29 PM
Last modification on : Tuesday, December 8, 2020 - 10:20:37 AM
Long-term archiving on: : Tuesday, April 4, 2017 - 12:41:55 AM

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Stefania Lo Feudo, Anissa Allani, Gwendal Cumunel, Pierre Argoul, Domenico Bruno. Experimental study of a tuned mass damper endowed with changeable stiffness and eddy currents damping. 9ème Colloque National de l’Association Française du Génie Parasismique (AFPS) , Nov 2015, Marne-la-Vallée, France. ⟨hal-01424493⟩

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