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International Journal for Multiscale Computational Engineering
Fator do impacto: 1.016 FI de cinco anos: 1.194 SJR: 0.554 SNIP: 0.68 CiteScore™: 1.18

ISSN Imprimir: 1543-1649
ISSN On-line: 1940-4352

International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.2016017957
pages 585-606

POSTBUCKLING OF NANOCOMPOSITE PLATE REINFORCED WITH RANDOMLY ORIENTED AND DISPERSED CNTS MODELED THROUGH RSA TECHNIQUE

Ashish Srivastava
Mechanical Engineering Department, Malaviya National Institute of Technology, Jaipur, India
Dinesh Kumar
Mechanical Engineering Department, Malaviya National Institute of Technology, Jaipur, 302017, India

RESUMO

The aim of the present paper is to study the buckling and postbuckling behavior of carbon nanotube (CNT)-reinforced magnesium (Mg) nanocomposite plates. A Boolean-based random sequential adsorption (RSA) technique is employed to model a representative volume element (RVE) with randomly oriented and positioned CNTs using uniform and normal distributions. The elastic properties of the resulting nanocomposite are evaluated using that RVE. Further, the evaluated stiffness properties of CNT-Mg nanocomposite are utilized to investigate the effects of CNT reinforcement on buckling and postbuckling behavior of the nanocomposite plate. Buckling and postbuckling studies of the nanocomposite plate are carried out using nonlinear finite element methods formulation based on the first-order shear deformation theory and von Karman's assumptions. The arc-length method is utilized to solve the resulting nonlinear finite-element algebraic equations. It is concluded that CNT reinforcement leads to substantial increase in the stiffness properties of soft matrix materials as compared to the stiff matrix materials, and hence percentage enhancements in buckling load and postbuckling strength of CNT-reinforced soft matrix materials are found to be more pronounced than those of CNT-reinforced stiff matrix materials.