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, Dinh Gia; Bich, Dao Huy

doi:10.1177/1099636216644787

Cited by 27 publications

(8 citation statements)

References 41 publications

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“…The special case of this soil model is the Winkler elastic soil model, which is defined as a system of parallel springs that do not touch each other [20][21][22]. In recent years, some studies on the buckling analysis of FGM cylindrical shells resting on different elastic foundations have been published in the literature [23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

On the torsional buckling moment of cylindrical shells consisting of functionally graded materials resting on the Pasternak-type soil

Sofiyev¹,

Kadioglu²,

Khalilov³

et al. 2022

SOCAR Proceedings

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In this study, the buckling analysis of cylindrical shells made of functionally graded materials (FGMs) under the torsional moment resting on the Pasternak-type soil is performed. After establishing the linear constitutive relations of FGM cylindrical shells within the framework of the modified Donnell type shell theory, the governing equations of FGM cylindrical shells under the torsional moment are derived considering the influence of Pasternak-type soil. Analytical formula for the torsional moment is obtained by choosing the approximation functions that satisfies the boundary conditions in an integral sense. From the obtained formula, the formulas for the critical torsional moment in the presence of Winkler soil and absence of soils are obtained as a special case. Variations of critical torsional moment for different soil coefficients, volume fraction ratio and shell characteristics are investigated in detail. Keywords: functionally graded materials; cylindrical shell; buckling; critical torsional moment; Pasternak-type soil.

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Section: Introductionmentioning

confidence: 99%

On the torsional buckling moment of cylindrical shells consisting of functionally graded materials resting on the Pasternak-type soil

Sofiyev¹,

Kadioglu²,

Khalilov³

et al. 2022

SOCAR Proceedings

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“…Various parameters such as applied voltage, volume fraction and distribution of CNTs significantly impacted the wave propagation in the system. Ninh et al 35–39 studied nonlinear dynamic responses of FG-CNTRC shell conveying to internal and external fluid flow. The high order shear deformation theory and the Galerkin’s method were used to structural stability.…”

Section: Introductionmentioning

confidence: 99%

Coupled effects of surface interaction and damping on electromechanical stability of functionally graded nanotubes reinforced torsional micromirror actuator

Yang

Liu

Ying³

et al. 2021

The Journal of Strain Analysis for Engineering Design

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This paper demonstrated the coupled surface effects of thermal Casimir force and squeeze film damping (SFD) on size-dependent electromechanical stability and bifurcation of torsion micromirror actuator. The governing equations of micromirror system are derived, and the pull-in voltage and critical tilting angle are obtained. Also, the twisting deformation of torsion nanobeam can be tuned by functionally graded carbon nanotubes reinforced composites (FG-CNTRC). A finite element analysis (FEA) model is established on the COMSOL Multiphysics platform, and the simulation of the effect of thermal Casimir force on pull-in instability is utilized to verify the present analytical model. The results indicate that the numerical results well agree with the theoretical results in this work and experimental data in the literature. Further, the influences of volume fraction and geometrical distribution of CNTs, thermal Casimir force, nonlocal parameter, and squeeze film damping on electrically actuated instability and free-standing behavior are detailedly discussed. Besides, the evolution of equilibrium states of micromirror system is investigated, and bifurcation diagrams and phase portraits including the periodic, homoclinic, and heteroclinic orbits are described as well. The results demonstrated that the amplitude of the tilting angle for FGX-CNTRC type micromirror attenuates slower than for FGO-CNTRC type, and the increment of CNTs volume ratio slows down the attenuation due to the stiffening effect. When considering squeeze film damping, the stable center point evolves into one focus point with homoclinic orbits, and the dynamic system maintains two unstable saddle points with the heteroclinic orbits due to the effect of thermal Casimir force.

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“…Therefore, it is essential to investigate both local (wrinkling) and global response of honeycomb structures under compressive loading [16,17]. There are a number of studies in literature that have studied the buckling behavior of composite structures and shell structures, which help to gain a deep understanding of the buckling behavior of sandwich panel structures [18–22].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of buckling behavior of foam-filled honeycomb core sandwich panels considering viscoelastic effects

Safarabadi

Haghighi‐Yazdi

Sorkhi

et al. 2020

Jnl of Sandwich Structures & Materials

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Honeycomb sandwich panels are widely used in marine, aerospace, automotive and shipbuilding industries. High strength to weight and excellent energy absorption are features that make these structures unique. Foam filling the honeycomb core enhances the mechanical properties of sandwich panels considerably. In the present study, the buckling behavior of Nomex honeycomb core/glass-epoxy face sheet sandwich panel for both bare and foam-filled honeycomb core is investigated numerically and experimentally, considering the viscoelastic properties of the sandwich panel. Indeed, the viscoelastic properties of the composite face sheet and foam are determined by relaxation test and are implemented in ABAQUS using VUmat code. The finite element method is also performed using ABAQUS to model the buckling behavior of the sandwich panel incorporating both elastic and viscoelastic material behaviour. The effects of composite face sheet lay-up, core thickness, core cell size, and foam filling are also evaluated. The experimental and numerical results show that the foam increases the critical buckling load and energy absorption.

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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

Cited by 27 publications

References 41 publications

On the torsional buckling moment of cylindrical shells consisting of functionally graded materials resting on the Pasternak-type soil

On the torsional buckling moment of cylindrical shells consisting of functionally graded materials resting on the Pasternak-type soil

Coupled effects of surface interaction and damping on electromechanical stability of functionally graded nanotubes reinforced torsional micromirror actuator

Experimental and numerical study of buckling behavior of foam-filled honeycomb core sandwich panels considering viscoelastic effects

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