University of Illinois Urbana-Champaign

Experimental evaluation of plasticity theories for anisotropic metals

Frederking, R.M.W.; Sidebottom, O.M.

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https://hdl.handle.net/2142/112047

Description

Title
Experimental evaluation of plasticity theories for anisotropic metals
Author(s)
  • Frederking, R.M.W.
  • Sidebottom, O.M.
Issue Date
1969-04
Keyword(s)
  • Plasticity
  • Anisotropic Metals
Abstract
An experimental investigation was undertaken to evaluate anisotropic plasticity theories which have been proposed in the literature. Three different metals in the form of 2.5 in. diameter bars were considered: SAE 1020 steel preloaded in tension to a strain of 8 percent, copper alloy 360 (free cutting brass) preloaded in tension to a strain of 3 percent, and 2024-T351 aluminum alloy was received. All metals had approximately the same properties in the radial and circumferential directions with greatly different properties in the axial direction. Tension and compression tests were conducted on specimens having directions of axial, circumferential and 45° to the axis. Hollow torsion tests were conducted on axial specimens. Biaxial tests were conducted on thin-walled cylinders. All loading was monotonic and proportionate and extended well into the plastic region. The various anisotropic plasticity theories were evaluated by comparing theoretical and experimental yield curves for each material and by comparing theoretical load-deformation curves with experimentally determined curves for tension and compression specimens at 45° to the axis, for hollow torsion specimens, and for biaxial loading. In most cases good agreement was found between theory and experiment.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 322
  • 1969-0151
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112047
Copyright and License Information
Copyright 1969 Board of Trustees of the University of Illinois

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Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.