Dynamic instability of three-layered cylindrical shells containing an FGM interlayer

AVEY A., KURUOĞLU N.

Thin-Walled Structures, vol.93, pp.10-21, 2015 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 93
  • Publication Date: 2015
  • Doi Number: 10.1016/j.tws.2015.03.006
  • Journal Name: Thin-Walled Structures
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.10-21
  • Keywords: Dynamic instability, FGM interlayer, Three-layered cylindrical shells, Time dependent periodic axial load, Unstable region
  • Istanbul Gelisim University Affiliated: Yes

Abstract

In this study, the dynamic instability of three-layered cylindrical shells containing a functionally graded (FG) interlayer subjected to static and time dependent periodic axial compressive loads are investigated. The governing relations, modified Donnell type dynamic stability and deformation compatibility equations are derived. The governing equations are reduced Mathieu-Hill equation by using Galerkins method and the expressions for boundaries of unstable regions of three-layered cylindrical shell with an FG interlayer are found. Finally, the effects of variations of volume fractions of FG interlayer and shell characteristics on the magnitudes of boundaries of unstable regions are studied numerically.