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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Computational Methods

Free vibration analysis of a circular cylindrical shell comprised of axially functionally graded material

< Table of Contents for Computational Methods
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Computational Methods
  • Pages: 10
  • Title: Free vibration analysis of a circular cylindrical shell comprised of axially functionally graded material
  • Author(s): Hiroshi Sakurai
  • Keywords: circular cylindrical shell, functionally graded materials, free vibration, love’s shell theory, differential quadrature method
Abstract
Functionally graded materials (FGMs) were initially developed as highly heat resistant materials and are suitable for various applications, including aerospace, biomaterials, and many others. The objective of this paper is to study free vibrations of an FGM circular cylindrical shell that has Young's modulus and mass density varying in the axial direction by the differential quadrature method. Love's thin shell theory is employed. The material properties are graded in the axial direction according to a volume fraction power-law distribution. First, analysis of isotropic cylindrical shell are carried out and the validity of the present method is shown. Next, an FGM shell having constituent materials of alumina and steel is studied. Comparing the behaviours of the free vibration of the isotropic shell and the FGM shell, it was found that gradient of the material properties affects the natural frequencies. However, remarkable differences in the mode shapes are not observed.

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