Topic
Sandwich panel
About: Sandwich panel is a research topic. Over the lifetime, 4665 publications have been published within this topic receiving 49812 citations.
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TL;DR: In this article, the authors investigated the role of localized effects within the geometrically nonlinear domain on structural sandwich panels with a compliant core and found that localized loads change the response of the panel from a strength problem controlled by stress constraints into a stability problem with unstable limit point behavior when force-controlled loads are applied.
Abstract: This paper presents the results of an investigation of the role of localized effects within the geometrically nonlinear domain on structural sandwich panels with a “compliant” core. Special emphasis is focused on the nonlinear response near concentrated loads and stiffened core regions. The adopted nonlinear analysis approach incorporates the effects of the vertical flexibility of the core, and it is based on the approach of the High-order Sandwich Panel Theory (HSAPT). The results demonstrate that the effects of localized loads, when taken into the geometrically nonlinear domain, change the response of the panel from a strength problem controlled by stress constraints into a stability problem with unstable limit point behavior when force-controlled loads are applied. The stability problem emerge as the nonlinear response develops with the formation of a small number of buckling waves in the compressed face sheet in the vicinity of the localized loads. The development of the nonlinear response is demonstr...
27 citations
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TL;DR: In this article, an innovative fiber composite sandwich panel made of glass fibre reinforced polymer skins and a modified phenolic core material was developed for building and other structural applications, and the behavior of this new generation sandwich panel was studied with reference to the main fibre orientation in floor applications, so that the effect due to erroneous installation could be evaluated.
27 citations
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TL;DR: In this article, the free vibration and buckling analysis of the cylindrical sandwich panel with magneto-rheological fluid layer for simply supported boundary conditions was performed based on an impounded magneto rheological flow model.
Abstract: In this paper, the free vibration and buckling analyses of the cylindrical sandwich panel with magneto-rheological fluid layer for simply supported boundary conditions was performed based on an imp...
27 citations
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TL;DR: In this article, the frequency responses of free vibrated composite sandwich panel structure were investigated numerically by considering geometrical nonlinearity via generalised Green-Lagrange strain kinematics.
Abstract: The frequency responses of free vibrated composite sandwich panel structure are investigated numerically by considering the geometrical nonlinearity via generalised Green–Lagrange strain kinematics...
27 citations
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TL;DR: The nonlinear static responses of the skew sandwich flat/curved shell panel including the corresponding stress values are examined in this article under the influence of the unvarying transverse mechanical load.
Abstract: The nonlinear static responses of the skew sandwich flat/curved shell panel including the corresponding stress values are examined in this article under the influence of the unvarying transverse mechanical load. To evaluate the said responses of the sandwich panel, the physical structure model turned to a mathematical form via a higher-order kinematic theory including the stretching term effect in the displacement field variable. The effect of geometrical nonlinearity has been included via Green–Lagrange strain–displacement kinematics. The governing equation has been derived from the variational principle and is solved via direct iterative technique including the finite element procedure. Further, a customized finite element computer code has been developed in MATLAB environment based on the current mathematical model for the computational purpose. To check the comprehensive behavior of the proposed model, the bending responses are obtained for different mesh sizes and compared with the published data (numerical and 3D elasticity solution). Subsequently, a wide range of numerical examples have been solved for the different geometrical configurations (side-to-thickness ratio, curvature ratio, core-to-face thickness ratio, skew angle and support conditions) and the influence of the same on deflection and stress behavior has been shown and discussed in detail.
27 citations