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Advances in Aircraft and Spacecraft Science
  Volume 5, Number 1, January 2018 , pages 021-49
DOI: https://doi.org/10.12989/aas.2018.5.1.021
 

Geometrical nonlinear bending characteristics of SWCNTRC doubly curved shell panels
Shivaji G. Chavan and Achchhe Lal

 
Abstract
    In this paper, geometric nonlinear bending characteristics of single wall carbon nanotube reinforced composite (SWCNTRC) doubly curved shell panels subjected to uniform transversely loadings are investigated. The nonlinear mathematical model is developed for doubly curved SWCNTRC shell panel on the basis of higher-order shear deformation theory and Green– Lagrange nonlinearity. All nonlinear higher order terms are included in the mathematical model. The effective material properties of SWCNTRC are estimated by using Eshelby-Mori-Tanaka micromechanical approach. The governing equation of the shell panel is obtained using the total potential energy principle and a Newton-Raphson iterative method is employed to compute the nonlinear displacement and stresses. The present results are compared with published literature. The effect of SWCNT volume fraction, width-to-thickness ratio, radius-to-width ratio (R/a), boundary condition, linear and nonlinear deflection, stresses and different types of shell geometry on nonlinear bending response is investigated.
 
Key Words
    SWCNTRC shell panel; micromechanics; nonlinear bending; green-lagrange nonlinearity; HSDT; newton-raphson method
 
Address
Shivaji G. Chavan and Achchhe Lal: Department of Mechanical Engineering, S.V.N.I.T, Surat, Gujarat 395007, India
 

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