Abstract

Fiber Reinforced Plastics (FRP) has been utilized in applications of automobile and aircraft structures because of the high specific strength and stiffness ratios. These FRP composites are typically fabricated by stacking orthotropic laminas, each composed of reinforcing fibers and matrix materials. In this work, an optimum design approach is presented by using the lamination parameters with the gradient method, and is used to optimize buckling behaviors of laminated composite plates. This approach can derive the optimum lay-up design from the calculated values of the parameters, and yields the maximum buckling loads with corresponding optimum lay-ups (fiber orientation angles).

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