Prediction of Creep of AL 2618 under Variable Multiaxial Stresses.

Abstract

Simultaneous creep in torsion and stress relaxation in tension experiments with proportional and non-proportional load changes were reasonably predicted by a modified viscous-viscoelastic model. Creep experiments at stresses below a transition stress showed linear behavior with no synergistic effect. Above the transition, creep was non-linear and synergistic. Stress reversal at low stresses showed the same time dependence for both positive and negative stressing, but prior creep was not wiped out. At higher stresses prior creep was wiped out on complete reversal of stress. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 03, 1980
Accession Number
ADA093697

Entities

People

  • William N. Findley

Organizations

  • Brown University

Tags

DTIC Thesaurus Topics

  • Aluminum
  • Aluminum Alloys
  • Applied Mechanics
  • Constitutive Equations
  • Creep
  • Engineering
  • Materials
  • Mechanics
  • Military Research
  • Recovery
  • Scientists
  • Strain Hardening
  • Stresses
  • Tensile Stress
  • Time Dependence
  • Transitions
  • Unloading

Readers

  • Mechanical Engineering/Mechanics of Materials.