Large Deformation Elastic-Plastic Buckling Analysis of Spherical Caps with Initial Imperfections.

Abstract

Large deformation elastic-plastic buckling loads are obtained for axisymmetric spherical caps with initial imperfections. The problem formulation is based on equilibrium equations in which the plastic deformation is taken as effective plastic loads. Plasticity theory is derived from von Mises initial yield condition and Prager-Ziegler kinematic hardening rule. Results show that both initial imperfection and plastic deformation have the same effect of reducing buckling loads, and that the influence of plastic yielding diminishes as the magnitude of imperfections increases. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1979
Accession Number
ADA071480

Entities

People

  • Robert Kao

Organizations

  • George Washington University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Axisymmetric
  • Buckling
  • Computer Programs
  • Engineering
  • Equations
  • Geometry
  • Hardening
  • Materials
  • Military Research
  • Plastic Deformation
  • Plastic Flow
  • Plastic Properties
  • Shape
  • Strain Hardening
  • Stress Strain Relations
  • Stresses
  • Thickness

Readers

  • Structural Dynamics.