Kevlar/FRP sandwich plate의 판요소 두께에 따른 Fundamental Frequency 변화에 관한 연구

초록

Sandwich structures are normally characterized with high flexible rigidity/strength for low-sensity ratio, and excellent in anti-vibration and anti-noise. There properties usefully function in building airplanes and high-speed ship, which required lighter and high strength elements. In this paper, we have performed series of experiments in vibration of FRP sandwich plate. We compared experiment data of vibration test and simulation result and analytical solution. In the case of FRP sandwich plate, we carried out optimum desing th achieve the maximum frequency in the same mass condition and we performed optimum design of steel stiffened plate in the same natural frequency of FRP sandwich plate