Techno Press
You logged in as Techno Press

Steel and Composite Structures
  Volume 43, Number 2, April25 2022 , pages 241-256
DOI: https://doi.org/10.12989/scs.2022.43.2.241
 


Nonlinear static analysis of composite cylinders with metamaterial core layer, adjustable Poisson
Hamidreza Eipakchi and Farid Mahboubi Nasrekani

 
Abstract
    In this article, an analytical procedure is presented for static analysis of composite cylinders with the geometrically nonlinear behavior, and non-uniform thickness profiles under different loading conditions by considering moderately large deformation. The composite cylinder includes two inner and outer isotropic layers and one honeycomb core layer with adjustable Poisson's ratio. The Mirsky-Herman theory in conjunction with the von-Karman nonlinear theory is employed to extract the governing equations which are a system of nonlinear differential equations with variable coefficients. The governing equations are solved analytically using the matched asymptotic expansion (MAE) method of the perturbation technique and the effects of moderately large deformations are studied. The presented method obtains the results with fast convergence and high accuracy even in the regions near the boundaries. Highlights: · An analytical procedure based on the matched asymptotic expansion method is proposed for the static nonlinear analysis of composite cylindrical shells with a honeycomb core layer and non-uniform thickness. · The effect of moderately large deformation has been considered in the kinematic relations by assuming the nonlinear von Karman theory. · By conducting a parametric study, the effect of the honeycomb structure on the results is studied. · By adjusting the Poisson ratio, the effect of auxetic behavior on the nonlinear results is investigated
 
Key Words
    adjustable Poisson's ratio; analytical method; composite cylinder with honeycomb core layer; moderately large deformation; nonlinear static analysis
 
Address
Hamidreza Eipakchi:Faculty of Mechanical and Mechatronics Engineering, Shahrood University of Technology, Shahrood, I.R. Iran

Farid Mahboubi Nasrekani: School of Information Technology, Engineering, Mathematics and Physics, The University of the South Pacific (USP), Suva, Fiji
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2025 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: admin@techno-press.com