Dynamic behavior of sandwich beams with different compositions of magnetorheological fluid core

Magnetorheological fluid (MRF) sandwich beams belong to a class of adaptive that consists MRF sandwiched between two or more face layers and have great prospective for use in semi-active control beam vibrations due their superior vibration suppression capabilities. The composition has strong influence on the properties hence affects characteristics beam. In this work, six samples (MRFs) composed combination particle sizes three weight fractions carbonyl iron powder (CIP) were prepared viscoelastic measured. MRFs used fabricate different core beams. Additionally, with commercially available 132DG as was fabricated. modal parameters cantilever determined at magnetic fields. Further, sinusoidal sweep excitation tests performed these fields investigate behavior. having larger size higher fraction CIP resulted damping ratio suppression. Finally, optimal based maximization minimization MRF.