Buckling analysis of moderately thick FG carbon nanotube reinforced composite conical shells under axial compression by DQM

Nonlinear buckling and postbuckling of orthogonal carbon nanotube-reinforced composite (Orthogonal CNTRC) cylindrical shells subjected to axial compression in thermal environments surrounded by elastic foundation are presented in this paper. Two layers of shell are reinforced by carbon nanotube (CNT) in two orthogonal directions (longitudinal and circumferential directions). Based on Donnell’s shell theory with von Karman’s nonlinearity and the Galerkin method, the governing equations are established to obtain the critical buckling loads and postbuckling load-deflection curves. The large effects of CNT volume fraction, temperature change, elastic foundation and geometrical parameters of cylindrical shells on the buckling load and postbuckling behavior of Orthogonal CNTRC cylindrical shells are obtained.

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Stress and buckling analysis of a thick-walled micro sandwich panel with a flexible foam core and carbon nanotube reinforced composite (CNTRC) face sheets

Applied Mathematics and Mechanics ◽

10.1007/s10483-020-2627-7 ◽

2020 ◽

Vol 41 (7) ◽

pp. 1027-1038 ◽

Cited By ~ 2

Author(s):

A. Amiri ◽

M. Mohammadimehr ◽

M. Anvari

Keyword(s):

Carbon Nanotube ◽

Sandwich Panel ◽

Buckling Analysis ◽

Foam Core ◽

Reinforced Composite ◽

Flexible Foam

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Thermo-Mechanical Post Buckling Analysis of Multiwall Carbon Nanotube-Reinforced Composite Laminated Beam under Elastic Foundation

Curved and Layered Structures ◽

10.1515/cls-2019-0018 ◽

2019 ◽

Vol 6 (1) ◽

pp. 212-228 ◽

Cited By ~ 6

Author(s):

Achchhe Lal ◽

Kanif Markad

Keyword(s):

Carbon Nanotube ◽

Elastic Foundation ◽

Volume Fraction ◽

Coefficient Of Thermal Expansion ◽

Buckling Analysis ◽

Multiwall Carbon Nanotube ◽

Laminated Beam ◽

Reinforced Composite ◽

Multi Walled Carbon Nanotube ◽

Pasternak Elastic Foundation

AbstractIn present paper, buckling analysis is performed over laminated composite beam incorporating multi walled carbon nanotube (MWCNT) polymer matrix and then reinforced with E-glass fiber in an orthotropic manner under inplane varying thermal and mechanical loads by finite element method (FEM). Aim of the study is to develop a model which accurately perform the buckling deterministic analysis of multi-walled carbon nanotube reinforced composite laminated beam (MWCNTRCLB) with the evaluation of material property by applying Halpin–Tsai model. Combined Higher order shear deformation theory and Pasternak elastic foundation based on von Karman nonlinear kinematics and Winkler cubic nonlinearity respectively, are successfully implemented. Through minimum potential energy principle, generalized static analysis is performed using FEM, based on interactive MATLAB coding. The critical buckling load and critical buckling temperature is presented under the action of inplane variable mechanical and thermal load, with different boundary conditions, beam thickness ratio and MWCNT aspect ratio, variation with MWCNT volume fraction and coefficient of thermal expansion, with and without foundation for linear and nonlinear cases.

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