Abstract
The vibration characteristics of the composite plate model with curvilinear fibers are investigated in this study. The curvilinear fiber is realized by the plastic deformation of steel wires and the present composite model is composed of the curved steel wires and epoxy resin. The natural frequency and mode shape are obtained by the experimental modal analysis method where the plate is excited by the impulse hammer and acceleration response is measured. The experimental results showed that the present model has the specific skewed mode shape and it agrees well with the finite element analysis result in terms of the frequency and mode shape. Then the curvilinear fiber shape is optimized for the maximum fundamental frequency by using the genetic algorithm method. The numerical results showed that the optimum curvilinear fiber results in the higher fundamental frequency than the plate with typical curvilinear fibers.
