Buckling and post-buckling responses of smart doubly curved composite shallow shells embedded in SMA fiber under hygro-thermal loading

KARIMIASL M., EBRAHIMI F., AKGÖZ B.

COMPOSITE STRUCTURES, cilt.223, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 223
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1016/j.compstruct.2019.110988
  • Dergi Adı: COMPOSITE STRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: Thermal loading, SMA, Composite shallow shell, Hygro-thermal loading, von-Korman geometric nonlinearity, TSDT, STRAIN-GRADIENT ELASTICITY, NONLINEAR FREE-VIBRATION, NONLOCAL STRAIN, WAVE-PROPAGATION, LONGITUDINAL VIBRATION, NANOCOMPOSITE BEAMS, CARBON NANOTUBES, BENDING ANALYSIS, DYNAMIC-ANALYSIS, LAMINATED BEAMS
  • Akdeniz Üniversitesi Adresli: Evet

Özet

In this research, the post-buckling behaviors of doubly curved composite shells in hygro-thermal environment are investigated by employing multiple scales perturbation method. Three-phase composites shells with polymer/Carbon nanotube/fiber and polymer/Graphene platelet/fiber (PGF) and Shape Memory Alloy (SMA)/matrix according to Halpin-Tsai model are taken into consideration. The displacement-strain of laminated doubly curved shells via third-order shear deformation theory (TSDT) and using von-Korman nonlinear shell theory is obtained. The governing equations of shallow shell are derived by implementing Hamilton's principle. For investigating correctness and accuracy, this paper is validated with other previous researches. Finally, different parameters such as volume fraction of SMA, temperature rise, various distribution patterns, aspect and curvature ratios are considered in this article. It is found that these parameters have significant effect on the thermal buckling loading.