Header menu link for other important links
X
Studies on linear thermoelastic buckling and free vibration analysis of geometrically perfect hemispherical shells with cut-out
Natrajan Ganesan
Published in Academic Press
2004
Volume: 277
   
Issue: 4-5
Pages: 855 - 879
Abstract
Thermoelastic buckling and free vibration analysis of geometrically perfect isotropic hemispherical shells subjected to axisymmetric temperature variation are presented. First order shear deformation theory is used to analyze the moderately thick elastic hemispherical shells. The variations of various field variables are assumed in the circumferential direction and the finite element matrices used in the numerical studies are based on the semi-analytical method. The formulation is validated for thermal buckling strains available in the literature. Thermal buckling temperatures are evaluated for deep shells having a cut-out at the apex. Parameters considered in the study include hemispherical shells with a/h ratios of 100 and 500 and each with cut-out angle at apex equal to 7°, 30° and 45°. Boundary conditions considered are clamped-clamped and clamped-free. A study on the distribution of the stress resultants due to thermal loading is examined in order to relate their influence on the buckling temperature of the shells with respect to above-stated geometric parameters. The effect of temperature on the free vibration natural frequency of the hemispherical shell is also analyzed. © 2003 Elsevier Ltd. All rights reserved.
About the journal
JournalJournal of Sound and Vibration
PublisherAcademic Press
ISSN0022460X
Open AccessNo
Concepts (18)
  •  related image
    Boundary conditions
  •  related image
    Buckling
  •  related image
    Combustion chambers
  •  related image
    Finite element method
  •  related image
    Fuel tanks
  •  related image
    Mathematical models
  •  related image
    Shear deformation
  •  related image
    Shells (structures)
  •  related image
    Strain
  •  related image
    Submarines
  •  related image
    Temperature distribution
  •  related image
    Thermal load
  •  related image
    Thermoelasticity
  •  related image
    BUCKLING STRAINS
  •  related image
    HEMISPHERICAL SHELLS
  •  related image
    THERMAL LOADING
  •  related image
    Vibration analysis
  •  related image
    Vibrations (mechanical)