Domains of dynamic instability of FGM conical shells under time dependent periodic loads

Sofiyev A., KURUOĞLU N.

Composite Structures, cilt.136, ss.139-148, 2016 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 136
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.compstruct.2015.09.060
  • Dergi Adı: Composite Structures
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.139-148
  • Anahtar Kelimeler: Domains of instability, Dynamic instability, FG conical shell, Static and dynamic axial load factor
  • İstanbul Ticaret Üniversitesi Adresli: Hayır

Özet

On the basis of the dynamic version of linear Donnell type equations and with deformations before instability taken into account, the dynamic instability of simply supported, functionally graded (FG) truncated conical shells under static and time dependent periodic axial loads is analyzed. Appling Galerkin's method, the partial differential equations are reduced into a Mathieu-type differential equation describing the dynamic instability behavior of the FG conical shell. The domains of principal instability are determined by using Bolotin's method. Validation of numerical results was done with those available from previous researches. The influences of various parameters like static and dynamic load factors, volume fraction index, FG profiles and shell characteristics on the domains of dynamic instability of conical shell were investigated.