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

Abstract

In 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.

Mechanical behaviour of carbon nanotube composites: A review of various modelling techniques

“…They studied in-plane and rotary inertia effects, predicting instability zones, their width, and origin using first and HSDT. Lal et al 237 studied thermomechanical buckling in MWCNT-reinforced nanobeams using HSDT and von Karman nonlinear kinematics. Thang et al 238 investigated nonlinear static buckling of imperfect functionally graded CNT-reinforced composite plates subjected to axial compression and simply supported boundary conditions using classical plate theory with von Karman nonlinearity.…”

Dynamic stability of CNTs-reinforced non-uniform composite beams under axial excitation loading

“…Chen et al [26] presented the static and dynamic analyses of post-buckling of bi-directional FG micro-beams. Lal and Markad [27] presented the thermo-mechanical postbuckling analysis of CNTs-reinforced laminated beams on elastic foundation. Sahmani and Safaei [28] examined the influence of homogenization models on the size-dependent nonlinear bending and post-buckling of bi-directional FG micro-and nano-beams.…”

Nonlocal Analysis of the Flexural–Torsional Stability for FG Tapered Thin-Walled Beam-Columns

“…Different numerical approaches were applied in Refs. [ 89 , 90 , 91 , 92 , 93 ] for the linear stability and free vibrational study of homogenous and AFG tapered thin-walled beams with an open cross-section, subjected to different boundary conditions and arbitrary loading cases.…”