INFLUENCE OF STRAIN-HARDENING AND STRAIN-RATE SENSITIVITY ON THE PERMANENT DEFORMATION OF IMPULSIVELY LOADED RIGID-PLASTIC BEAMS

Abstract

A simple method is presented for estimating the combined influence of strain-hardening and strain-rate sensitivity on the permanent deformation of rigid-plastic structures loaded dynamically. A study is made of the particular case of a beam supported at the ends by immovable frictionless pins and loaded with a uniform impulse. The results of this work indicates that considering strain-hardening alone when appropriate or strain-rate sensitivity alone gives permanent deformations which are similar to those predicted by an analysis retaining both effects simultaneously.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1967
Accession Number
AD0657129

Entities

People

  • Norman Jones

Organizations

  • Brown University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Bending Moments
  • Cantilever Beams
  • Constitutive Equations
  • Curvature
  • Deflection
  • Department Of Defense
  • Equations
  • Geometry
  • Hardening
  • Kinetic Energy
  • Modulus Of Elasticity
  • Strain Hardening
  • Strain Rate
  • Stress Strain Relations
  • Stresses
  • Thickness
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Structural Dynamics.