Nonlinear Creep Buckling Analysis of Initially Imperfect Shallow Spherical Shells

Abstract

Creep buckling times and creep deformations are obtained for axisymmetric shallow spherical shells with and without initial imperfections. For nonlinear creeps, both strain-hardening and time-hardening rules are employed in the analysis; results indicate that strain-hardening yields better estimates of shell life than time-hardening. Results also show that the initial imperfection plays an important role in shortening shell creep buckling times.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1980
Accession Number
ADA087017

Entities

People

  • Robert Kao

Organizations

  • George Washington University

Tags

DTIC Thesaurus Topics

  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Axisymmetric
  • Buckling
  • Collapse
  • Computations
  • Engineering
  • Equations
  • Experimental Data
  • Geometry
  • Hardening
  • Materials
  • Military Research
  • Modulus Of Elasticity
  • Strain Hardening
  • Thickness

Readers

  • Mechanical Engineering/Mechanics of Materials.