Limit load analysis and imperfection sensitivity of heated or compressed FGM beams on nonlinear softening elastic foundation

• Hadi Babae ^[1] ; Yaser Kiani ^[2] ; Mohammad Reza Eslamici ^[3]
  1. [1] Islamic Azad University

     Islamic Azad University

     Irán

     
  2. [2] Shahrekord University

     Shahrekord University

     Irán

     
  3. [3] University of Technology

     University of Technology

     Rusia

     

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• Localización: Mechanics based design of structures and machines, ISSN 1539-7734, Vol. 50, Nº. 2, 2022, págs. 371-394
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Analysis of nonlinear response of thick FGM beams subjected to either thermal or mechanical load is performed. Beam is in contact with a threeparameter elastic foundation. Nonlinear component of the foundation may be of the hardening or softening type. Equilibrium equations of the clamped beam are obtained within the framework of von Karman assumptions and third-order shear deformation theory and solved using the twostep perturbation technique. It is shown that when the FGM beam is in contact with a sufficiently soft foundation, the post-buckling path of the heated/compressed FGM beam is unstable and therefore, the structure is imperfection sensitive