On the parametric instability of multilayered conical shells using the FOSDT

Lair J., Hui D., Sofiyev A., Gribniak V., Turan F.

Steel and Composite Structures, cilt.31, sa.3, ss.277-290, 2019 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 3
  • Basım Tarihi: 2019
  • Doi Numarası: 10.12989/scs.2019.31.3.277
  • Dergi Adı: Steel and Composite Structures
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.277-290
  • Anahtar Kelimeler: Axial load, Composite structures, Dynamic analysis, Instability, Vibration
  • İstanbul Ticaret Üniversitesi Adresli: Hayır

Özet

This paper investigates the parametric instability (PI) of multilayered composite conical shells (MLCCSs) under axial load periodically varying the time, using the first order shear deformation theory (FOSDT). The basic equations for the MLCCSs are derived and then the Galerkin method is used to obtain the ordinary differential equation of the motion. The equation of motion converted to the Mathieu-Hill type differential equation, in which the DI is examined employing the Bolotin’s method. The expressions for left and right limits of dimensionless parametric instability regions (PIRs) of MLCCSs based on the FOSDT are obtained. Finally, the influence of various parameters; lay-up, shear deformations (SDs), aspect ratio, as well as loading factors on the borders of the PIRs are examined.