Numerical buckling analysis of graded CNT-reinforced composite sandwich shell structure under thermal loading

Mehar, Kulmani; Panda, Sidhartha; Devarajan, Yuvarajan; Choubey, Gautam

doi:10.1016/j.compstruct.2019.03.002

Cited by 76 publications

(17 citation statements)

References 55 publications

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“…By using Ritz method with Chebyshev polynomials as shape functions, Kiani [26] explored the postbuckling behavior of FG-CNTRC sandwich plates with different boundary conditions under uniform temperature rise. A numerical analysis of buckling behavior of FG-CNTRC sandwich shell panels under thermal loads has been carried out in work of Mehar et al [27] adopting finite element method. In aforementioned works [25][26][27], sandwich structures are composed of isotropic homogeneous core layer and FG-CNTRC face sheets.…”

Section: Introductionmentioning

confidence: 99%

“…A numerical analysis of buckling behavior of FG-CNTRC sandwich shell panels under thermal loads has been carried out in work of Mehar et al [27] adopting finite element method. In aforementioned works [25][26][27], sandwich structures are composed of isotropic homogeneous core layer and FG-CNTRC face sheets. Long and Tung [28][29][30] investigated the postbuckling behavior of sandwich plates and cylindrical panels with FG-CNTRC core layer and face sheets subjected to mechanical and thermal loads.…”

Section: Introductionmentioning

confidence: 99%

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Thermal and thermomechanical buckling of CNT-reinforced composite sandwich cylindrical shells including elasticity of tangential edge restraint

Tung

Hiếu

2021

Vietnam J. Mech.

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This paper presents an analytical approach to investigate the buckling of sandwich cylindrical shells subjected to uniform temperature rise and external lateral pressure. Two sandwich models corresponding to carbon nanotube reinforced composite (CNTRC) face sheets and core layer are considered. The properties of all constitutive materials are assumed to be temperature dependent and effective properties of CNTRC are determined according to an extended rule of mixture. Governing equations are established using first order shear deformation theory and solved employing two-term form of deflection along with Galerkin method for simply supported edge shells. In order to account for practical situations of in-plane boundary condition, the elasticity of tangential constraint of boundary edges is included. Owing to temperature dependence of material properties, critical thermal loads are determined adopting an iteration process. Numerous parametric studies are carried out and interesting remarks are given. The study reveals that sandwich shell model with CNTRC core layer and homogeneous skins has considerably strong capacity of buckling resistance. Numerical results also indicate that tangential edge constraint has significant effects on critical loads, especially at elevated temperature. In addition, in the case of thermal load, an intermediate volume percentage of carbon nanotubes can confer the highest critical temperatures of sandwich shells.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal and thermomechanical buckling of CNT-reinforced composite sandwich cylindrical shells including elasticity of tangential edge restraint

Tung

Hiếu

2021

Vietnam J. Mech.

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“…The buckling load parameters of the functionally graded carbon nanotube sandwich structure were investigated using Numerical method. The plate was under compression loading [12], the uniform [13][14][15] and non-uniform [14,[16][17][18] thermal loading. The temperature profile was assumed to linearly [16] and nonlinearly [17] increase from the bottom surface at room temperature to the top surface of the composite plate.…”

Section: Introductionmentioning

confidence: 99%

A particle method development for analysing the post-buckling behaviour of composite plate with cut-out

Dehghani

2021

Scientia Iranica

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In this research, nonlinear buckling and post-buckling behaviours of composite plates with the circular/elliptical cut-out are investigated using particle semi-energy (PSE) method. The semienergy is based on the solution of compatibility equation via an Airy force and out-of-plane displacement functions. The unknown parameters of these functions are determined by minimizing the potential energy. The integrals of potential energy are replaced with summations at perforated plate particle (node). The cut-out is modelled easily using these nodes. The advantages of this method are modelling cut-out by nodes easily and proposing just one of the displacement fields (i.e. out-of-plane). Based on the results, there is a good agreement (1.25%) between the post-buckling loads derived from PSE of this paper and experimental test of other literature. The accuracy of the finite element method (FEM) is 7.5% with respect to experimental test. The influences of rotating elliptical cut-out and replacing it with two circular cut-outs via same areas on post-buckling load are investigated.

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“…Mehar et al. 32 investigated thermal buckling characteristics of CNT-reinforced composite sandwich shells using the finite element method. Mehar and Panda 33 investigated thermal buckling analysis of nanocomposite structures using finite element methods.…”

Section: Introductionmentioning

confidence: 99%

Modal analysis of cylindrical panels at elevated temperatures under nonuniform heating conditions: Experimental investigation

Twinkle

Nithun

Pitchaimani

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this study, experimental investigations carried out to analyze the influences of different in-plane temperature variations on buckling and free vibration responses of metal and fiber-reinforced laminated composite cylindrical panels are presented. Initially, critical buckling temperature is calculated then free vibration analysis is performed as a function of the buckling temperature to analyze the changes in the natural frequencies and mode shapes. Experimental results revealed that the thermal buckling strength of the panel is significantly influenced by the nature of the heating condition. Similarly, significant changes in free vibration mode shapes are observed with the rise in temperature and also according to the heating conditions. It is also observed that, with the increase in temperature, nodal and anti-nodal lines of free vibration modes shifting towards the heating source. The experimental results are compared with the numerical simulation for the studies on the isotropic cylindrical panel and both the results are in good agreement.

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Numerical buckling analysis of graded CNT-reinforced composite sandwich shell structure under thermal loading

Cited by 76 publications

References 55 publications

Thermal and thermomechanical buckling of CNT-reinforced composite sandwich cylindrical shells including elasticity of tangential edge restraint

Thermal and thermomechanical buckling of CNT-reinforced composite sandwich cylindrical shells including elasticity of tangential edge restraint

A particle method development for analysing the post-buckling behaviour of composite plate with cut-out

Modal analysis of cylindrical panels at elevated temperatures under nonuniform heating conditions: Experimental investigation

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