Buckling analysis of heterogeneous magneto-electro-thermo-elastic cylindrical nanoshells based on nonlocal strain gradient elasticity theory

• Reza Asrari ^[1] ; Farzad Ebrahimi ^[2] ; Mohammad Mahdi Kheirikhah ^[1] ; Keivan Hosseini Safari ^[1]
  1. [1] Islamic Azad University

     Islamic Azad University

     Irán

     
  2. [2] Imam Khomeini International University

     Imam Khomeini International University

     Irán

     
• Localización: Mechanics based design of structures and machines, ISSN 1539-7734, Vol. 50, Nº. 3, 2022, págs. 817-840
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • This article aims to investigate buckling characteristics of a functionally graded magneto-electro-thermo-elastic nanoshell based on nonlocal strain gradient theory (NSGT). Accounting for nonlocal and strain gradient sizedependency, NSGT has two scale coefficients. The nanoshell is subjected to external electric, magnetic, mechanical, and thermal fields. The temperature distributions are considered as uniform and linear thorough the nanoshell thickness. All material properties including elastic, piezoelectric, and magnetic properties are defined based on a power-law distribution type.

    Seven coupled governing equations are derived for the nanoshell based on Hamilton’s rule and then solved applying Galerkin’s approach. The dependency of the buckling behavior of the nanoshell on applied thermal load, temperature distribution, electric voltage, magnetic potential, material gradient index, scale parameters, and shear deformation will be explored.