Feasibility of Optimum Design for Vibration of Quasi-isotropic Laminated Rectangular Plates

The objective of this work is to propose that the vibration of quasi-isotropic composite plates can be optimized with respect to lay-up design in the layers. A quasi-isotropic plate is the laminated composite that has isotropic extensional stiffness, and it has never been regarded as a target in optimization, because only a limited combinations of fiber orientation angles are allowed to form isotropy in the plane. In the present results, feasibility of optimum design is discussed for vibration of quasi-isotropic laminated rectangular plates.