Improvement of thermo-mechanical properties of transversely flexible sandwich panels by functionally graded skins

Sadighi, Mojtaba; Benvidi, MH; Eslami,

doi:10.1177/1099636211400130

Cited by 6 publications

(6 citation statements)

References 13 publications

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“…The effect of the uncertainty in the elastic properties of the laminated and sandwich composite structure and subsequent nonlinear eigenvalue solutions are reported by Chandrashekhar and Ganguli [31]. The effect of thermomechanical loading effect on the flexural and buckling behaviour of the FG sandwich plate structure investigated using [32][33]. As discussed earlier, the HSDT kinematics is further utilised to model the and sandwich and laminated composite panel to compute the static and the dynamic behaviour by Mantari et al [34].…”

Section: Introductionmentioning

confidence: 99%

Thermoelastic Deflection Responses of CNT Reinforced Sandwich Shell Structure using Finite Element Method

2017

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The bending responses of nanotube-reinforced curved sandwich shell panel structure are studied under the influence of the thermomechanical loading. Further, the temperature dependent material properties of the sandwich structure are assumed to evaluate the exact responses. In addition, the face sheets of the sandwich construction are modeled using different grading pattern through the panel thickness. The final form of the equilibrium equation of the deflected sandwich structure obtained by minimising the total potential energy functional. Now, the equation is solved computationally via a suitable computer code (MATLAB) using the novel higher-order kinematics including the finite element method. The constancy and the accuracy of the current finite element solutions are verified by solving a different kind of numerical examples as same as the published examples. The effect of parameters associated with structural stiffness and the flexural behaviour of the nanotube-reinforced curved sandwich structural panel are examined together with the unlike temperature distributions (uniform and linear) and discussed the final conclusions in detail.

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Section: Introductionmentioning

confidence: 99%

Thermoelastic Deflection Responses of CNT Reinforced Sandwich Shell Structure using Finite Element Method

2017

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“…Woodward and Kashtalyan [5] analyzed a three-dimensional elasticity for a sandwich panel with stiffness of the core graded in the thickness direction, on the basis of the developed 3D elasticity solution subjected to distributed and concentrated loadings. In [6–10], the bending and post-buckling of sandwich FGM structures with FGM core were studied.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear torsional buckling and post-buckling of eccentrically stiffened ceramic functionally graded material metal layer cylindrical shell surrounded by elastic foundation subjected to thermo-mechanical load

Ninh

Bich

2016

Jnl of Sandwich Structures & Materials

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The nonlinear torsional buckling and post-buckling of ceramic functionally graded material (C-FGM-M) stiffened cylindrical shell surrounded by Pasternak elastic foundation in thermal environment are investigated in this paper. The C-FGM-M cylindrical shell is reinforced by ring and stringer stiffeners system in which the material properties of shell are assumed to be continuously graded in the thickness direction. Based on the classical shell theory, theoretical formulations are derived with the geometrical nonlinearity in von Karman sense and the smeared stiffeners technique. The three-term approximate solution of deflection is chosen more correctly and the explicit expression for finding critical load and post-buckling torsional load–deflection curves are given. The effects of geometrical parameters, temperature, stiffeners and elastic foundation are investigated.

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“…Sadighi et al. 59 studied bending response of a sandwich panel with functionally graded skins under thermal and/or mechanical loading using higher order sandwich plate theory and Fourier conduction equation to obtain temperature distribution and then investigate thermoelastic behaviour of such structure. They showed that wise selection of FG skin materials is helpful to decrease the delamination failure possibility under thermo mechanical loading.…”

Section: Introductionmentioning

confidence: 99%

“…Kheirikhah and Khalili 58 presented an accurate finite element model for bending analysis of softcore rectangular sandwich plates with orthotropic homogeneous core and graded skins in the ANSYS 11.0 standard code area. Sadighi et al 59 studied bending response of a sandwich panel with functionally graded skins under thermal and/or mechanical loading using higher order sandwich plate theory and Fourier conduction equation to obtain temperature distribution and then investigate thermoelastic behaviour of such structure. They showed that wise selection of FG skin materials is helpful to decrease the delamination failure possibility under thermo mechanical loading.…”

Section: Introductionmentioning

confidence: 99%

Bending analysis of sandwich plates with composite face sheets and compliance functionally graded syntactic foam core

Lashkari

Rahmani

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this paper, the problem of a rectangular plate with functionally graded soft core and composite face sheets is considered using high order sandwich plate theory. This theory applies no assumptions on the displacement and stress fields in the core. Face sheets were treated using classical theory and core was exposed to the theory of elasticity. Governing equations and boundary conditions are derived using principle of virtual displacement and the governing equations are based on eight primary variables including six displacements and two shear stresses. This solution is able to present localized displacements and stresses in places where concentrated loads are exerted to the structure since the displacements in the core can take a nonlinear form which could not be seen in the previous theories such as classical and higher order shear theories. This theory is suitable for rectangular plates under all types of loadings distributed or concentrated which can be different on upper and lower face sheets at the same point. The results were compared with the published literature using theory of elasticity and showed good agreement confirming the accuracy of the present theory. Subsequently, the solution for the core with functionally graded material is presented and effectively indicates positive role of functionally graded core.

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Improvement of thermo-mechanical properties of transversely flexible sandwich panels by functionally graded skins

Cited by 6 publications

References 13 publications

Thermoelastic Deflection Responses of CNT Reinforced Sandwich Shell Structure using Finite Element Method

Thermoelastic Deflection Responses of CNT Reinforced Sandwich Shell Structure using Finite Element Method

Nonlinear torsional buckling and post-buckling of eccentrically stiffened ceramic functionally graded material metal layer cylindrical shell surrounded by elastic foundation subjected to thermo-mechanical load

Bending analysis of sandwich plates with composite face sheets and compliance functionally graded syntactic foam core

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