Journal ArticleDOI
Behavior of Unidirectional Sandwich Panels with a Multi-Skin Construction or a Multi-Layered Core Layout-High-Order Approach
Y. Frostig,Oded Rabinovitch +1 more
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TLDR
The behavior of a unidirectional sandwich panel that consists of a multi-skin construction and a "soft" core is presented in this article, where the formulation is comprehensive, rigorous, and uses a variational approach that yields the field equations along with the appropriate boundary conditions for beams and unIDirectional panels (wide beams).Abstract:
The behavior of a unidirectional sandwich panel that consists of a multi-skin construction and a "soft" core is presented. In addition, a unidirectional sandwich panel with a core made of various layers, a multi-layered core, is discussed. The formulation is comprehensive, rigorous, and uses a variational approach that yields the field equations along with the appropriate boundary conditions for beams and unidirectional panels (wide beams). The governing equations for the two cases are presented for skins made of laminated composites with a general stacking sequence, and for a multi-layered core made of layers of isotropic or orthotropic materials. Typical panels that consist of a multi-skin construction are numerically studied. A unidirectional sandwich panel that has an edge with a cut-off is investigated and the involved stress concentration is examined as well. The effect of additional skin layers at mid height of the panel is presented and compared with an ordinary panel that consists of two skins. T...read more
Citations
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Journal ArticleDOI
A Survey With Numerical Assessment of Classical and Refined Theories for the Analysis of Sandwich Plates
TL;DR: In this article, a survey of plate/shell analysis is presented, where the authors evaluate a large variety of plate theories to evaluate the bending and vibration of sandwich structures, including classical, higher order, zigzag, layerwise, and mixed theories.
Journal ArticleDOI
Adhesive Layer Effects in Surface-Mounted Piezoelectric Actuators
Oded Rabinovitch,Jack R. Vinson +1 more
TL;DR: In this article, the role of the adhesive layers in active panels with surface-mounted (bonded) piezoelectric layers is studied and the strain transfer mechanism between the active layers and the host structure, the stress concentrations involved, and the influence of the geometrical and mechanical properties of adhesive layers on the static response of the panel is investigated.
Journal ArticleDOI
High-order behavior of sandwich panels with a bilinear transversely flexible core
TL;DR: In this paper, a closed-form high-order theory for the analysis of a sandwich panel with a core made of a material characterized by a nonlinear constitutive relation is presented, where the material nonlinearities in the core are a result of bilinear constitutive relations of the shear and vertical normal stresses.
Journal ArticleDOI
High-order behavior of fully bonded and delaminated circular sandwich plates with laminated face sheets and a “soft” core
O. Rabinovitch,Yeoshua Frostig +1 more
TL;DR: In this paper, the bending behavior of circular, fully or partially bonded (delaminated), sandwich plates with a soft core and composite laminated face sheets of general layup is investigated.
Journal ArticleDOI
Analysis of Laminated Shells by Murakami’s Zig-Zag Theory and Radial Basis Functions Collocation
TL;DR: The static and free vibration analysis of laminated shells is performed by radial basis functions collocation, according to Murakami’s zig-zag (ZZ) function (MZZF) theory.
References
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Journal ArticleDOI
Assessment of Shear Deformation Theories for Multilayered Composite Plates
Ahmed K. Noor,W. Scott Burton +1 more
TL;DR: A review of the different approaches used for modeling multilayered composite plates is given in this paper, where the effects of variation in the lamination and geometric parameters of simply supported composite plates on the accuracy of the static and vibrational responses predicted by six different modeling approaches (based on 2D shear deformation theories).
Journal ArticleDOI
High‐Order Theory for Sandwich‐Beam Behavior with Transversely Flexible Core
TL;DR: In this paper, a general high-order theory based on variational principles is presented for the bending behavior of a sandwich beam with a core that is vertically flexible, which embodies a rigorous and systematic approach to the analysis of such structures, which have highorder effects caused by the nonlinearity of the longitudinal and the transverse deformations of the core through the height.
Journal ArticleDOI
Free Vibrations Of Sandwich Beams With A Transversely Flexible Core: A High Order Approach
Yeoshua Frostig,Menahem Baruch +1 more
TL;DR: In this article, a general rigorous approach including high order effects owing to the non-linearity of the displacement fields of the core caused by its flexibility in the vertical direction is presented.
Journal ArticleDOI
Buckling of sandwich panels with a flexible core—high-order theory
TL;DR: In this article, the buckling behavior of sandwich panels with a core that is flexible in the out-of-plane direction, also denoted as soft core including high-order effects, is presented.
Journal ArticleDOI
High-order buckling analysis of sandwich beams with transversely flexible core
Y. Frostig,M. Baruch +1 more
TL;DR: In this paper, the buckling behavior of sandwich beams with a soft core is analyzed using a high-order theory that permits nonlinear distortion of the plane of section of the core as well as changes in its height.