Abstract
In this paper the finite element method has been used to determine the fundamental naturalfrequencies of a pre-twisted plate mounted on the periphery of a rotating disc. Three dimensional,finite element programs was built using three noded triangular shell element as a discretizationelement for cantilever plate, this element has six degrees of freedom at each node. All formulationsand computations are coded in (FORTRAN-77). The investigation covers the effect of speed ofrotation, disc radius, aspect ratio, pre-twist angle and skew angle on the vibration characteristics ofrotating cantilever plate. For this analysis, the initial stress effect (geometric stiffness) and otherrotational effects except the corioles acceleration effect have been included. The eigenvalues havebeen extracted by using simultaneous iteration technique. Results shown that the naturalfrequencies increase when; angular speed and disc radius are increases
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