Influence of Fibre Arrangement on the Buckling Load of Composite Plates - Analytical Solution

Czapski, Paweł; Kubiak, Tomasz

doi:10.5604/12303666.1161764

Cited by 14 publications

(6 citation statements)

References 17 publications

(18 reference statements)

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“…Figure 9 present the The postcritical equilibrium paths designated in the experiment show lower rigidity than numerical calculations results, but the maximum differences do not exceed 16%. This fact is related to higher rigidity of the numerical model, for which the ideal conditions of analysis are maintained, which is also consistent with the results of similar studies published in the literature [2,3]. These conclusions have important practical meaning in the aspect of the calculation of that type structure for use as elastic elements.…”

Section: Results Of the Numerical Calculations And The Experimental Isupporting

confidence: 89%

Postbuckling Behaviour of Laminated Plates With a Cut-Out

Falkowicz

Dębski

2017

Adv. Sci. Technol. Res. J.

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The subject of research is the numerical and experimental analysis of a thin-walled plate with the cut-out, made of the laminate and subjected to the axial compression. In order to ensure the stable plate work in the postcritical range, it need to force its work by higher flexural-torsional form of buckling. The scope of the research included nonlinear numerical analysis with Finite Element Method (FEM) and experimental verification of calculation results. For the composite material in numerical calculations, the model of orthotropic material in the flat state of tension was defined. For the mapping of the plate element coating finite elements of type SHELL was applied with a shape function of the second order to allow the mapping of the composite structure for the element thickness. The experimental research was carried out in a special grips providing the articulated support of the upper and lower edges of the plate. The deformation registration of compression structures were carried out with resistance extensometry. This allowed to define of postcritical equilibrium paths of real structure, showing the dependence of the force to displacement. The instrument used was a numerical program ABAQUS ® .

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Section: Results Of the Numerical Calculations And The Experimental Isupporting

confidence: 89%

Postbuckling Behaviour of Laminated Plates With a Cut-Out

Falkowicz

Dębski

2017

Adv. Sci. Technol. Res. J.

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“…The distance between the support pins and the beam ends (denoted as a) was assumed to be approximately 20% of the support span length (Table 1). 4 ] T . Elastic properties and the strength limits of applied generic E-glass-epoxy and carbon-epoxy composites were adopted from the literature [25] and summarised in Table 2.…”

Section: Subject Of the Study 21 Three-point Bending Testmentioning

confidence: 99%

“…Fibre-reinforced material also guarantees improved strength and stiffness, especially when compared to other structural materials on a unit weight basis [3]. More importantly, depending on the fibre orientation in FRP, the structure could be stiffer in one particular direction, which gives an advantage for its industrial applications [4]. Therefore, such laminates are widely used as advanced structural materials in almost all branches of industry, particularly in aviation industry [5,6].…”

Section: Introductionmentioning

confidence: 99%

Load-carrying capacity of the GFRP and CFRP composite beams subjected to three-point bending test – numerical investigations

Banat

2019

Mechanics and Mechanical Engineering

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The subject of this article is the finite element method (FEM) simulation of the multi-layered rectangular composite beam subjected to three-point bending test. The study is focused on the composite beams made of glass or carbon fibre-reinforced laminates (glass fibre-reinforced polymer [GFRP] and carbon fibre-reinforced polymer [CFRP]) for which different laminate stacking were addressed. Three beam geometries with various length-to-thickness ratios included short beam shear (SBS) test, provided the beam is short relative to its thickness, which maximised the induced shear stresses. Simulation included the application of Tsai–Hill, Hoffman, Tsai–Wu, Hashin and Puck failure criteria to perform the composite beam failure analysis wherein the matrix and fibre failure were considered separately. Numerical failure studies also aimed to verify the beam failure modes and the participation of stress tensor elements in material failure.

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“…Additionally, parametric studies are conducted to evaluate beam stiffness coefficients depending on the fiber lamination angle. Czapski et al [ 15 ] studied the influence of the angular arrangement of laminae on the buckling force of rectangular composite plates. A general, simple analytical method of buckling load determination and finding the best arrangement in terms of the highest stiffness in the pre-buckling state are presented.…”

Section: Introductionmentioning

confidence: 99%

Influence of Mechanical Couplings on the Dynamical Behavior and Energy Harvesting of a Composite Structure

2020

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In this paper, the dynamical behavior of composite material is analyzed, including the energy harvesting effect. The composite is modeled by the Finite Element Method (FEM) and is made of pre-impregnate with a matrix of thermosetting epoxy resin reinforced with high-strength R-type glass fibers, and it is designed as a beam structure that is exposed to mechanical vibrations. The structure assumed the form of a beam with a substantially rectangular cross section. The couplings of motion occurring between mode shapes at properly selected fiber orientations are investigated. The beams with determined sets of composite layers and a coupling effect are used to recover electricity from the mechanical vibrations in the vicinity of the first resonance zone. The composite with a certain number of fiber glass layers has assumed an orientation relative to the beam axis. The new values found in this paper are the intensity of the coupling between the bending in the stiff and flexible directions of the beam for a chosen fiber layer stacking sequence. Additionally, the influence of layer configuration on the energy harvesting efficiency of the Macro-Fiber Composite (MFC) piezoelectric element is assessed.

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Influence of Fibre Arrangement on the Buckling Load of Composite Plates - Analytical Solution

Cited by 14 publications

References 17 publications

Postbuckling Behaviour of Laminated Plates With a Cut-Out

Postbuckling Behaviour of Laminated Plates With a Cut-Out

Load-carrying capacity of the GFRP and CFRP composite beams subjected to three-point bending test – numerical investigations

Influence of Mechanical Couplings on the Dynamical Behavior and Energy Harvesting of a Composite Structure

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