Thermal buckling load optimization of laminated composite plates

Topal, Umut; Uzman, Ümit

doi:10.1016/j.tws.2007.11.005

Cited by 60 publications

(19 citation statements)

References 15 publications

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“…The optimization procedure and finite element technique used in this article are further validated by comparing our results with the results obtained by Topal and Uzman. 30 They used a nine-noded Lagrangian rectangular plate element in which each node has five degrees of freedom and analyzed a clamped square laminated composite plate with the dimensions and material properties, as listed in Table 4. The plate was assumed that it was made of plies having same fiber orientation and was subjected to uniform thermal load.…”

Section: Resultsmentioning

confidence: 99%

Optimization of laminated composite plates subjected to nonuniform thermal loads

Nicholas

Dharmaraja²,

Sofía

et al. 2019

Polymers and Polymer Composites

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Fiber-reinforced laminated composite structures are extensively used in aircraft and aerospace industries for their high specific strength and stiffness. In such applications, they are generally subjected to nonuniform thermal loads due to change in thermal conditions. Therefore, the composite structures used in the applications in which they are subjected to nonuniform thermal loads must also be designed to withstand thermal loads. As mechanical and thermal properties of fiber-reinforced laminated composites are greatly influenced by the direction of fibers and stacking sequences, they are optimally varied in this article to maximize the critical buckling temperature of the composite plate. The ply angle and stacking sequence of the laminated composite plate are optimized using genetic algorithm to maximize the thermal buckling temperature. As the plate is subjected to different kinds of nonuniform thermal load cases, finite element technique is used to analyze the plate during the optimization process. As geometry and supporting conditions of the plate also have great influence on its thermal buckling strength, the investigation is further widened by carrying out the optimization process for the plate model constructed with various types of support conditions, aspect ratio, and nonuniform load cases. The numerical results clearly show the necessities that the optimum ply angle and stacking sequences are greatly varying based on the aspect ratio, support conditions, and nonuniform loading cases.

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Section: Resultsmentioning

confidence: 99%

Optimization of laminated composite plates subjected to nonuniform thermal loads

Nicholas

Dharmaraja²,

Sofía

et al. 2019

Polymers and Polymer Composites

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“…Lakshmi narayana et al [5] evaluated the thermal buckling behavior of laminated plates made from composite material according to elliptical and circular cutout. Topal and Uzman [6] presented a study including the optimal design of laminated plates made of composite material based on disturbed temperature load. Huang and Tauchert [7] examined the buckling characteristic of moderately thick symmetric angle-ply laminates with clamped boundary conditions under uniform temperature loads.…”

Section: Introductionmentioning

confidence: 99%

Buckling Temperature Analysis of Laminated Composite Plates With Circular and Semicircular Holes

Evran

2020

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

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This statistical and numerical study deals with buckling temperature behavior of laminated composite plates with central circular and semicircular holes. Numerical buckling temperature analyses were performed using finite element software ANSYS based on Taguchi L18 orthogonal array. The plates were designed from graphite/epoxy systems. Fiber orientation angles and cutout shapes of the plates were assumed to be the control factors. Analysis of signal-to-noise ratio was used in order to investigate of the effects of fiber orientation angles and cutout shapes on the critical buckling temperature of the plates. Also, analysis of variance was performed in order to see percentage contribution rates and significance levels of control factors.

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“…More in detail, a parametric study was performed by the authors to investigate the effect of some geometrical and mechanical parameters-including the stiffness ratios, cross-ply ratios, and aspect ratios-on the critical thermal temperature and buckling behavior of thin plates. In the last decades, many optimization problems have also gained much attention for design purposes in order to define the optimal buckling temperature of a composite structure (see [14][15][16][17][18][19] …”

Section: Introductionmentioning

confidence: 99%

Thermal Buckling of Nanocomposite Stiffened Cylindrical Shells Reinforced by Functionally Graded Wavy Carbon Nanotubes with Temperature-Dependent Properties

et al. 2017

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Abstract:We study the thermal buckling behavior of cylindrical shells reinforced with Functionally Graded (FG) wavy Carbon NanoTubes (CNTs), stiffened by stringers and rings, and subjected to a thermal loading. The equilibrium equations of the problem are built according to the Third-order Shear Deformation Theory (TSDT), whereas the stiffeners are modeled as Euler Bernoulli beams. Different types of FG distributions of wavy CNTs along the radial direction of the cylinder are herein considered, and temperature-dependent material properties are estimated via a micromechanical model, under the assumption of uniform distribution within the shell and through the thickness. A parametric investigation based on the Generalized Differential Quadrature (GDQ) method aims at investigating the effects of the aspect ratio and waviness index of CNTs on the thermal buckling of FG nanocomposite stiffened cylinders, reinforced with wavy single-walled CNTs. Some numerical examples are here provided in order to verify the accuracy of the proposed formulation and to investigate the effects of several parameters-including the volume fraction, the distribution pattern of wavy CNTs, and the cylinder thickness-on the thermal buckling behavior of the stiffened cylinders made of CNT-reinforced composite (CNTRC) material.

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Thermal buckling load optimization of laminated composite plates

Cited by 60 publications

References 15 publications

Optimization of laminated composite plates subjected to nonuniform thermal loads

Optimization of laminated composite plates subjected to nonuniform thermal loads

Buckling Temperature Analysis of Laminated Composite Plates With Circular and Semicircular Holes

Thermal Buckling of Nanocomposite Stiffened Cylindrical Shells Reinforced by Functionally Graded Wavy Carbon Nanotubes with Temperature-Dependent Properties

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