Composite plate analysis made in an unsymmetric configuartion

Falkowicz, Katarzyna

doi:10.1088/1742-6596/2130/1/012014

Cited by 6 publications

(5 citation statements)

References 33 publications

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“…Columns were standard thin-walled constructions with perpendicular walls. Every column consisted of three flat plate elements that were joined together [ 56 , 57 , 58 , 59 , 60 , 61 ]. The column material was an eight-layered carbon–epoxy laminate manufactured by autoclave ( Figure 1 ).…”

Section: The Test Objectmentioning

confidence: 99%

Load Eccentricity of Compressed Composite Z-Columns in Non-Linear State

Wysmulski

2022

Materials

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The study investigated short, thin-walled Z-shaped carbon–epoxy laminate columns. Z-columns were compressed while considering the eccentric force realized from the center of gravity of the column section. The study involved performing a nonlinear analysis of the structures with implemented geometric imperfections reflecting the first buckling modes. The nonlinear analysis was performed by using the Tsai–Wu criterion to determine the effort of the composite material. The computations were run until the critical parameter was reached in the Tsai–Wu criterion, allowing for a description of the failure initiation mechanism in the composite material. The first signs of damage to the composite material were determined by using the acoustic emission method. Based on the results, postcritical equilibrium paths of the numerical models were determined. The equilibrium paths were then compared with the experimental characteristics of real structures. The numerical results and experimental findings show a satisfactory agreement. The results confirmed that the numerical models were adequate for estimating the performance of composite structures in the postcritical range, depending on the amplitude of compressive load eccentricity. The research topic undertaken is important because the thin-walled structure design relates to actual loads which, in most cases, differ from the idealized theoretical load conditions.

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Section: The Test Objectmentioning

confidence: 99%

Load Eccentricity of Compressed Composite Z-Columns in Non-Linear State

Wysmulski

2022

Materials

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“…It can be obtained by asymmetrical configuration of composite and by suitably shaped the geometric parameters of a thin-walled plate element with cut-out, without a change in its overall dimensions. More information about this conception presented in papers [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Prediction of Buckling Behaviour of Composite Plate Element Using Artificial Neural Networks

Falkowicz,

Kulisz

2024

Adv. Sci. Technol. Res. J.

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This article presents the use of artificial neural networks (ANNs) to analysis of the composite plate elements with cut-outs which can work as a spring element. The analysis were based on results from numerical approach. ANNs models have been developed utilizing the obtained numerical data to predict the composite plate's flexuraltorsional form of buckling as natural form for different cut-outs and angels configurations. The ANNs models were trained and tested using a large dataset, and their accuracy is evaluated using various statistical measures. The developed ANNs models demonstrated high accuracy in predicting the critical force and buckling form of thin-walled plates with different cut-out and fiber angels configurations under compression. The combination of numerical analyses with ANNs models provides a practical and efficient solution for evaluating the stability behaviour of composite plates with cut-outs, which can be useful for design optimization and structural monitoring in engineering applications.

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“…This means that the analyzed numerical models of thin-walled structures should be further validated experimentally. To that end, it is necessary to use approximation methods [57][58][59] that enable the estimation of the critical load value based on the experimental results. In this study, the straight-lines intersection method [60,61] was used to estimate the critical forces.…”

Section: Introductionmentioning

confidence: 99%

Buckling Analysis of Laminated Plates with Asymmetric Layup by Approximation Method

2023

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This study investigated thin-walled plate elements with a central cut-out under axial compression. The plates were manufactured from epoxy/carbon laminate (CFRP) with an asymmetric layup. The study involved analyzing the buckling and post-buckling behavior of the plates using experimental and numerical methods. The experiments provided the post-buckling equilibrium paths (P-u), which were then used to determine the critical load using the straight-line intersection method. Along with the experiments, a numerical analysis was conducted using the Finite Element Method (FEM) and using the ABAQUS® software. A linear analysis of an eigenvalue problem was conducted, the results of which led to the determination of the critical loads for the developed numerical model. The second part of the calculations involved conducting a non-linear analysis of a plate with an initial geometric imperfection corresponding to structural buckling. The numerical results were validated by the experimental findings, which showed that the numerical model of the structure was correct.

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Composite plate analysis made in an unsymmetric configuartion

Cited by 6 publications

References 33 publications

Load Eccentricity of Compressed Composite Z-Columns in Non-Linear State

Load Eccentricity of Compressed Composite Z-Columns in Non-Linear State

Prediction of Buckling Behaviour of Composite Plate Element Using Artificial Neural Networks

Buckling Analysis of Laminated Plates with Asymmetric Layup by Approximation Method

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