[Zurück]

C. Adam:
"Nonlinear flexural vibrations of composite plates with thick layers";
in: "Proceedings of 5th European Conference on Structural Dynamics", H. Grundmann, G.I. Schueller (Hrg.); herausgegeben von: EURODYN 2002, European Conference on Structural Dynamics; Balkema, Lisse, 2002, ISBN: 905809510x, S. 857 - 862.

In this paper moderately large amplitude vibrations of polygonally shaped composite plates with thick layers are analyzed. Three homogeneous and isotropic layers with a common Poisson's ratio are perfectly bonded and their arbitrary thickness and material properties are symmetrically disposed about the middle plane. Mindlin-Reissner kinematic assumptions are implemented layerwise, and as such model both the global and local response. Berger's approximation of nonlinear strain-displacement relations are applied to take into account geometrical nonlinear effects arising from longitudinally constrained supports. By means of proper definition of overall cross-sectional rotations a correspondence of this complex problem to the simpler case of a homogenized shear-deformable nonlinear plate with effective stiffness and hard hinged boundary conditions is found. The nonlinear steady-state response of composite plates subjected to a time-harmonic lateral excitation is investigated and the phenomena of nonlinear resonance are studied and evaluated.