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21 August 2001 Finite element modeling of MFC/AFC actuators
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The anisoparametric three-node MIN6 shallow shell element is extended for modeling Macro-fiber Composite/Active Fiber Composites (MFC/AFC) actuators for active vibration and acoustic control of curved and flat panels. The recently developed MFC/AFC actuators exhibit enhanced performance, they are anisotropic and highly conformable as compared to traditional monolithic isotropic piezoceramic actuators. The extended MIN6 shell element formulation includes embedded or surface bonded MFC/AFC laminae. The fully coupled electrical-structural formulation is general and is able to handle arbitrary doubly curved laminated composite and isotropic shell structures. A square and a triangular cantilever isotropic plates are modeled using the MIN6 elements to demonstrate the anisotropic actuation of a surface bonded MFC actuator for coupled bending and twisting plate motions. Steady state bending and twisting modal amplitudes of the cantilever square and triangular plates with MFC actuator are compared with the plate's modal amplitudes with traditional PZT 5A actuator. Frequency Response Function (FRF) for the square plate with MFC and PZT 5A are also compared.
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M. Salim Azzouz, Jeffrey S. Bevan, Jeng-Jong Ro, and Chuh Mei "Finite element modeling of MFC/AFC actuators", Proc. SPIE 4326, Smart Structures and Materials 2001: Modeling, Signal Processing, and Control in Smart Structures, (21 August 2001);

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