Application of the Quadrature Element Method to Vibration Analysis of Thick Composite Laminated Plates

• Main Authors: Huang-Chun Kuo, 郭皇均
• Other Authors: Siu-Tong Choi
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/81340734635120387380

碩士 === 國立成功大學 === 航空太空工程學系碩博士班 === 92 === 　　In this thesis, the dynamic characteristic of thick composite laminated plates is investigated by using the Quadrature Element Method (QEM). Governing equations of thick laminated plates are based on Mindlin first-order shear deformation theory. First, we apply the formulation of differential quadrature to discretize the differential governing equations of laminated plate elements into algebraic ones, which are then assembled to get the discrete equations for the entire plate. To evaluate the accuracy of the QEM, numerical results obtained by the QEM are compared with exact or numerical results in the literature. Furthermore, effects of boundary condition, number of layers, modulus ratio and width-to-thickness ratio on the natural frequencies of thick composite laminated plates are studied and compared with those in the literature. Furthermore, natural frequencies of thick composite laminated plates with non-uniform boundaries and thickness are obtained. Numerical results show the high accuracy and efficiency of the QEM for vibration analysis of laminated plates.