EXPERIMENTAL AND ANALYTICAL STUDY OF THE FREQUENCIES OF AN S-C-S-C PLATE CARRYING A CONCENTRATED MASS

The present work is concerned with the determination of the fundamenta l frequencies of a simply supported-clamped-simply supported-clamped ( SCSC) plate carrying a concentrated mass. An energy method based on th e Rayleigh's approach has been developed to obtain approximate closed- form solutions. A finite element analysis is also presented for compar ison. Extensive experimental investigation through a shaker system was conducted to collect useful test data. The comparison of experimental results with theoretical predictions of the energy method shows favor able correlations. In the parametric study, the effect of various size s of the concentrated mass, and the effect of the variation in the pla te geometry and material properties on the fundamental frequencies of the plate are presented.