THE DYNAMIC PLASTIC RESPONSE OF ALUMINUM TO PLANE STRAIN CYLINDRICAL STRESS WAVES,

Abstract

The dynamic plastic behavior of hollow cylinders deformed radially by an exploding wire technique is used to consider the relative merits of possible constitutive equations. The experiments are of two distinct types, a finite-rise pressure pulse form of loading and a higher stress level impact test. An analytic study of these tests using in turn a linear elastic, a perfectly plastic incremental, and an elastic/viscoplastic constitutive model provided the means of comparison. The results for 1100-0 aluminum show that only the elastic/viscoplastic model, in which the plastic strain rate component is based on an activation energy dislocation concept, can satisfy the requirement of both sets of tests. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1969
Accession Number
AD0695703

Entities

People

  • Ian M. Fyfe
  • Robert P. Swift

Organizations

  • University of Washington

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aluminum
  • Constitutive Equations
  • Dislocations
  • Energy
  • Equations
  • Exploding Wires
  • Heat Of Activation
  • Impact Tests
  • Strain Rate
  • Stress Waves
  • Stresses
  • Waves

Readers

  • Computational Modeling and Simulation
  • Mechanical Engineering/Mechanics of Materials.