Nonlinear Dynamic Buckling of Spherical Caps with Initial Imperfections,

Abstract

A finite difference method is developed for large deformation elastic-plastic dynamic buckling analysis of imperfect spherical caps. The problem formulation is based on governing equations of motion, treating plastic deformation as effective plastic loads. Plasticity theory is derived from von Mises yield condition and Prager-Ziegler kinematic hardening rule which predicts an ideal Bauschinger effect. Results indicate that dynamic effect has the influence of reducing load carrying capacity of perfect spherical caps; however, its influence on imperfect caps depends on the magnitude of initial imperfections. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1979
Accession Number
ADA071450

Entities

People

  • Robert Kao

Organizations

  • George Washington University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Axisymmetric
  • Computers
  • Constitutive Equations
  • Differential Equations
  • Dynamic Response
  • Equations
  • Equations Of Motion
  • Geometry
  • Iterations
  • Materials
  • Mechanics
  • Military Research
  • Payload
  • Plastic Deformation
  • Plastic Flow
  • Plastic Properties
  • Stress Strain Relations

Fields of Study

  • Engineering

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Dynamics.