INFLUENCE OF GEOMETRY AND END CONDITIONS ON OPTIMAL FUNDAMENTAL NATURAL FREQUENCIES OF SYMMETRICALLY LAMINATED PLATES

The fundamental natural frequency of rectangular symmetrically laminat ed plates with a given material system is maximized with respect to fi ber orientations by using a sequential linear programming method toget her with a simple move-limit strategy. Significant influence of plate thickness, aspect ratio, circular cutout and end conditions on the opt imal fiber orientations and the associated optimal fundamental natural frequency of fiber-reinforced laminated composite plates has been sho wn through this investigation.