Geometrically Nonlinear Free Vibrations of laminated Composite Beams: An Effective Formulation
The purpose of the present paper is to show that the problem of geometrically non linear free vibration of symmetrically and asymmetrically laminated composite beams with immovable ends can be reduced to that of isotropic homogeneous beams with effective bending stiffness and axial stiffness parameters. This simple formulation is developed using the governing axial equation of the beam in which the axial inertia and damping are ignored. The theoretical model is based on Hamiltons principle and spectral analysis. Iterative form solutions are presented to calculate the fundamental nonlinear frequency parameters which are found to be in a good agreement with the published results. The non-dimensional curvatures associated to the fundamental mode are also given in the case of clamped-clamped symmetrically and asymmetrically laminated composite beams.
large vibration amplitudes laminated composite beam multimode approach.
EL BIKRI Khalid MERRIMI EI Bekkaye BENAMAR Rhali
Universite Mohammed V-Souissi, Ecole Normale Superieure de IEnseignement Technique deRabat, LaMIPI, Universite Mohammed V-Agdal, Ecole Mohammadia dlngenieurs, LERSIM, Av. Ibn Sina, Agdal,Rabat, Moroc
国际会议
上海
英文
1681-1684
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）