Third M.I.T. Conference on Computational Fluid and Solid Mechanics June 14–17, 2005  

Computational and experimental study of active vibration control of a rectangular plate coupled to liquid

S. Carraa, M. Amabilia,*, R. Ohayonb, J.S. Schottec
aUniversità degli Studi di Parma, Dipartimento di Ingegneria Industriale, Parco Area delle Scienze 181/A, 43100 Parma, Italy bConservatoire National des Arts et Metiers (CNAM), Structural Mechanics and Coupled Systems Laboratory, Paris, France cOffice National d'Etudes et de Recherches Aerospatiales (ONERA)/DDSS, Chatillon, France

  Full Text
Active structural vibration control of a rectangular plate representing a flexible wall of a thick Plexiglas container is investigated, for both empty and water-filled tank. A finite-elements model of the plate, which includes additional masses and stiffness of actuators and sensors, is presented. The computational results are compared with experimental modal analyses. A filtered-x LMS adaptive feedforward algorithm is experimentally applied with a SISO approach on the perturbed system, obtaining satisfactory results on the control of the first three modes.

Keywords:  Active control; Vibrations; Finite elements; Fluid–structure interaction; Feedforward

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