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  1. Home
  2. Indian Institute of Technology Madras
  3. Publication10
  4. A linear thermoelastic buckling behavior of functionally graded hemispherical shell with a cut-out at apex in thermal environment
 
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A linear thermoelastic buckling behavior of functionally graded hemispherical shell with a cut-out at apex in thermal environment

Date Issued
01-01-2005
Author(s)
Bhangale, Rajesh K.
Ganesan, N.
DOI
10.1142/s021945540500157x
Abstract
In this paper, a finite element formulation based on first-order shear deformation theory (FSDT) is used to study the thermal buckling behavior of functionally graded material (FGM) hemispherical shells with a cut-out at apex in a high temperature environment. A Fourier series expansion for the displacement variable in the circumferential direction is used to model the FGM hemispherical shell. The material properties of FGM hemispherical shells are functionally graded in the thickness direction according to a volume fraction power law distribution. Temperature-dependent material properties are considered to carry out a linear thermal buckling analysis. The hemispherical shell is assumed to be clamped-clamped and has a high temperature specified on the inner surface while the outer surface is at ambient temperature. The one-dimensional heat conduction equation is applied along the thickness of the shell to determine the temperature distribution and thereby material properties. Converged critical buckling temperatures are computed for two cases of thermal loads, namely, under uniform temperature rise and temperature gradient across the thickness. Numerical studies include the influence of, power law index, base to radius ratios, and different cut-out angles at the apex on the magnitude of thermal buckling temperature. © World Scientific Publishing Company.
Volume
5
Subjects
  • Converge buckling tem...

  • Converge temperature ...

  • FEA

  • FGM hemispherical she...

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