Numerical simulations of structural behavior of sandwich panels subjected to concentrated static loads

Abstract

Abstract. The paper presents numerical simulations of the behavior of sandwich panels loaded by static concentrated force. Two model classes (2D and 3D) are considered, and the results are compared with the effective width method. The comparison mainly concerns the displacements and stresses in the facings. The obtained results indicate the areas of conformity between the models but also show significant differences between them. The observed local effects are discussed and the surprising location of extreme stress in the facings is demonstrated.MSC 2010: 65C20, 68U07, 68U20, 70C20, 74K20

Warping Torsion in Sandwich Panels: Analyzing the Structural Behavior through Experimental and Numerical Studies

“…Figure 16 illustrates that this approach is acceptable for the present investigation. The deviation of the results σ x (x 1 ), u z (x 1 ), τ xy,f (x 2 ) obtained from the validated numerical model applying LS I and LS II is low (< 6%), presumably resulting from the concentrated load introduction, see [ 28 ].…”

Analytical validation of the finite element method model for Laplace equation

“…Many authors from different fields compare results of their numerical models with analytical solutions or with the numerical solutions obtained on the basis of different models [7]. The comparison with the analytical solution proves the mathematical accuracy of developed model while comparing obtained results with the numerical solution of considered problem proves the accuracy of implementation of used numerical method.…”

Failure mode prediction for composite structural insulated panels with MgO board facings

“…However, since the FEM model has to be able to predict localised failure modes, core was modelled with solid elements, based on similar research [5][6][7][8][9][10][11][22][23][24]. Due to significant thickness of MgO board the facings were discretised with solid elements as well.…”

“…Sandwich panel is a low-weight prefabricated product ready for an immediate assembly, which makes it easy to handle, transport and embed in the structure; it is also characterised by water impermeability, improved thermal properties and a relatively good bearing capacity. These advantages are the main reason why it is widely used in the building industry [3][4][5][6][7][8][9][10][11][12][13]. The most common types of panels used in civil engineering are composed of steel or aluminium facings and a polyurethane or expanded polystyrene foam core.…”

“…The most common types of panels used in civil engineering are composed of steel or aluminium facings and a polyurethane or expanded polystyrene foam core. Due to complexity of layer interactions even these widespread combinations of materials are of a great interest to researchers in terms of geometry optimisation (length, relative layer thickness, facing geometry) [3,4,14], localised load effects and varied support conditions [4][5][6][7], the influence of openings [8] or submission to extreme loads (windborne debris, explosions) [10,11]. Exchanging thin metal facings with relatively thicker, wood-based ones and using a foam core of a significant thickness created a sandwich panel variation called the Structural Insulated Panel (SIP).…”