LARGE AMPLITUDE FREE VIBRATIONS OF LAMINATED COMPOSITE PLATES |
| |
Authors: | Wang Haowen Gao Zheng and Zheng Zhaochang |
| |
Institution: | (1) Department of Aircraft, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, China;(2) Department of Engineering Mechanics, Tsinghua University, 100084 Beijing, China |
| |
Abstract: | 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.
Supported by the NNSFC (No. 19672033), the National Key Project on Basic Research and Applied Research (PD9521904) and the
Doctoral Training Foundation of Education Commission of China(No. 98000304). |
| |
Keywords: | composite plate free vibration |
本文献已被 万方数据 SpringerLink 等数据库收录! |