Talks and Poster Presentations (without Proceedings-Entry):
"Nonlinear flexural vibrations of composite shallow open shells";
Talk: 77th Annual Meeting of the Gesellschaft für Angewandte Mathematik und Mechanik e.V.,
This presentation addresses nonlinear flexural vibrations of shallow shells composed of three thick layers with different shear flexibility, which are symmetrically arranged with respect to the middle surface. The considered shell structures of polygonal planform are hard hinged supported with the edges fully restraint against displacements in any direction. The kinematic field equations are formulated by layerwise application of a first order shear deformation theory. A modification of Berger´s theory is employed to model the nonlinear characteristics of the structural response. The continuity of the transverse shear stress across the interfaces is specified according to Hooke´s law, and subsequently the equations of motion of this higher order problem can be derived in analogy to a homogeneous single-layer shear deformable shallow shell. Numerical results of rectangular shallow shells in nonlinear steady state vibration are presented for various ratios of shell rise to thickness, and non-dimensional load amplitude.
Created from the Publication Database of the Vienna University of Technology.