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Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Lateral vibration attenuation of a beam with piezoelastic supports subject to varying axial tensile and compressive loads
 Barthorpe, R. ; Society for Experimental Mechanics SEM, Bethel: 35th IMAC, a Conference and Exposition on Structural Dynamics 2017. Proceedings. Vol.3: Model validation and uncertainty quantification : Garden Grove, California, January 30February 2, 2017 Cham: Springer International Publishing, 2017 (Conference proceedings of the Society for Experimental Mechanics series) ISBN: 9783319548579 (Print) ISBN: 9783319548586 (Online) S.18 
 Conference and Exposition on Structural Dynamics <35, 2017, Garden Grove/Calif.> 

 Englisch 
 Konferenzbeitrag 
 Fraunhofer LBF () 
 lateral vibration; piezoelastic support; axial tensile; compressive load 
Abstract
In this paper, vibration attenuation of a beam with circular crosssection by resonantly shunted piezoelastic supports is experimentally investigated for varying axial tensile and compressive beam loads. Varying axial beam loads manipulate the effective lateral bending stiffness and, thus, lead to a detuning of the beams resonance frequencies. Furthermore, varying axial loads affect the general electromechanical coupling coefficient of transducer and beam, an important modal quantity for shuntdamping. The beam’s first mode resonance frequency and coupling coefficient are analyzed for varying axial loads. The values of the resonance frequency and the coupling coefficient are obtained from a transducer impedance measurement. Finally, frequency transfer functions of the beam with one piezoelastic support either shunted to a RLshunt or to a RLshunt with negative capacitance, the RLCshunt, are compared for varying axial loads. It is shown that the beam vibration attenuation with the RLCshunt is less influenced by varying axial beam loads.