Static stability and vibration behavior of graphene platelets reinforced porous sandwich cylindrical panel under non-uniform edge loads using semi-analytical approach

Twinkle, C M; Pitchaimani, Jeyaraj

doi:10.1016/j.compstruct.2021.114837

Cited by 15 publications

(3 citation statements)

References 39 publications

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“…Wu et al [23] developed an unified formulation of full geometrically nonlinear refined shell theory based on the CUF and the total Lagrangian approach to predict the post-buckling, largedeflection, snap-through and snap-back nonlinear responses with high accuracy. Twinkle and Pitchaimani [24] investigated buckling and free vibration response of graphene nano platelets (GPL) reinforced porous sandwich cylindrical panel subjected to different type of in-plane compressive loads. Different combinations of porosity and GPL distributions for the sandwich core were considered.…”

Section: Introductionmentioning

confidence: 99%

Elastic buckling of a generalized cylindrical sandwich panel under axial compression

Magnucki,

Magnucka-Blandzi,

Wittenbeck

2023

Bulletin of the Polish Academy of Sciences Technical Sciences

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The paper is devoted to buckling problem of an axially compressed generalized cylindrical sandwich panel and rectangular sandwich plate. The continuous variation of mechanical properties in thickness direction of the structures is assumed. The generalized theory of deformation of the straight line normal to the neutral surface is applied. The analytical model of this sandwich panel is elaborated. Three differential equations of equilibrium of this panel based on the principle of stationary potential energy are obtained. This system of equations is analytically solved and the critical load is derived. Moreover, the limit transformation of the sandwich panel to a sandwich rectangular plate is presented. The critical loads of the example cylindrical panels and rectangular plates are derived.

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Section: Introductionmentioning

confidence: 99%

Elastic buckling of a generalized cylindrical sandwich panel under axial compression

Magnucki,

Magnucka-Blandzi,

Wittenbeck

2023

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…They developed the mathematical model using higher-order shear deformation theory (HSDT) while incorporating trapezoidal shape functions to minimize the error associated with the shell curvature. Twinkle and Pitchaimani 30 employed semi analytical approach to determine buckling and free vibration response of sandwich shells with FG-GNPRP core.…”

Section: Introductionmentioning

confidence: 99%

On the large amplitude vibration of shallow sandwich shells with FG-GNPRP core considering initial geometric imperfections

Shakir

Talha

Hui

et al. 2023

Jnl of Sandwich Structures & Materials

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The present study investigates the influence of initial geometric imperfections on large amplitude vibration of shallow sandwich shells with functionally graded graphene nanoplatelets reinforced porous (FG-GNPRP) core embedded between two aluminium facets. The aluminium core is reinforced with graphene nano-platelets (GNP) and the effective properties such as elastic modulus, and mass density, etc. are estimated using Halpin-Tsai and Voigt models, respectively. The continuous functions are adopted to accomplish micro-structural gradation while creating pores which imparts the variation in material properties along thickness direction. The nonlinear governing equations based on higher order shear deformation theory and Sander’s approximation are derived using variational approach. The nonlinearity is introduced in von-Kármán sense and various imperfection modes such as sine, global and local types are considered in transverse direction. The nonlinear results are accessed using finite element method in conjunction with direct iterative technique. The influence of porosity, GNP weight fraction, imperfection amplitude, thickness, side, and radius ratios on the vibration response of the sandwich shells is explored in detail.

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“…It was revealed from their research that by decreasing the modulus of angle, the fundamental natural frequency always increases. Twinkle and Pitchaimani (2022) investigated the buckling and free vibration characteristics of sandwich cylindrical structure with porous functionally graded graphene platelets core based on the higher-order shear deformation theory and a semi-analytical approach. They considered the influence of the nature of in-plane edge load, distribution of porosity and graphene platelets, porosity coefficient, graphene platelets loading, and core-to-thickness ratio on the buckling and vibration response of the composite structure.…”

Section: Introductionmentioning

confidence: 99%

Modal properties investigation of a carbon/glass fiber-reinforced polymer composite sandwich structure with lozenge-like core: An experimental and finite element simulation

Eratbeni

Rostamiyan

2022

Journal of Vibration and Control

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The vibration properties of a carbon fiber-reinforced polymer (CFRP) and glass fiber-reinforced polymer (GFRP) composite sandwich panels with lozenge-like core and free-free boundary conditions are experimentally determined in this research. The sandwich panels manufactured for this study are composed of CFRP, GFRP, and epoxy resin. A modal experiment is performed using a modal hammer with an acceleration sensor to obtain modal properties of the structure, including natural frequencies, damping ratio, mode shapes, and frequency responses. Eventually, the comparison of vibration characteristics of the CFRP sandwich panel with the GFRP sandwich panel with almost identical geometry is discussed in detail. Furthermore, a finite element simulation is developed to validate the precision of the experimental data. It is recognized that the finite element results are in remarkably good agreement with those obtained by modal experiments. Hence, the finite element analysis and experiment method could be utilized to predict the modal properties of the CFRP and GFRP composite sandwich panels.

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Static stability and vibration behavior of graphene platelets reinforced porous sandwich cylindrical panel under non-uniform edge loads using semi-analytical approach

Cited by 15 publications

References 39 publications

Elastic buckling of a generalized cylindrical sandwich panel under axial compression

Elastic buckling of a generalized cylindrical sandwich panel under axial compression

On the large amplitude vibration of shallow sandwich shells with FG-GNPRP core considering initial geometric imperfections

Modal properties investigation of a carbon/glass fiber-reinforced polymer composite sandwich structure with lozenge-like core: An experimental and finite element simulation

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