LARGE AMPLITUDE FREE VIBRATIONS OF LAMINATED COMPOSITE PLATES

作     者：Wang Haowen Gao Zheng Zheng Zhaochang 

作者机构：Department of AircraftNanjing University of Aeronautics and AstronauticsNanjing 210016China Department of Engineering MechanicsTsinghua UniversityBejing 100084China 

出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)

年 卷 期：2000年第13卷第1期

页      面：75-80页

核心收录：

学科分类：08[工学] 080104[工学-工程力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the NNSFC (No.19672033) the National Key Project on Basic Research and Applied Research (PD9521904) the Doctoral Training Foundation of Education Commission of China(No.98000304) 

主　　题：composite plate free vibration 

摘      要：This paper deals with large amplitude free flexural vibrations of laminated composite plates using a 9-node Heterosis degenerated isoparametric quadrilateral element, including the effects of transverse shear and rotary inertia. The nonlinear dynamic equations of the plates are formulated in von Karman s sense. Amplitude-frequency relationships are obtained through dynamic response history using; the Newmark numerical integration scheme. Detailed numerical results based on various parameters are presented for orthotropic laminated plates with different boundary conditions. The rectangular anti-symmetric cross-ply plates show the softening type of nonlinearity for initial small amplitudes. The displacement amplitudes decrease and nonlinear frequencies increase with the increment of time.