初期たわみを有する補強長方形板の非線形自由振動
(第3報) 実験
1990 年 38 巻 443 号 p. 660-668
詳細
1990 年 38 巻 443 号 p. 660-668
This paper presents an experimental investigation of the linear (small amplitude) and nonlinear (large amplitude) fundamental vibrations of orthotropic stiffened square plates with a small initial curvature. The stiffened plates are made of toughpitch copper plates by photo-etching. The plates are excited by a speaker and the modes of linear vibration are measured by laser holography. The effects of the initial curvatures on the vibration modes and the variations of eigen-frequencies with the amplitude are clarified. The experimental results are found to verify the previously theoretical investigations.
