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Identification of the plastic deformation characteristics of AL5052-O sheet based on the non-associated flow rule

Metals and Materials International, ISSN: 2005-4149, Vol: 23, Issue: 2, Page: 254-263
2017
  • 30
    Citations
  • 0
    Usage
  • 20
    Captures
  • 0
    Mentions
  • 40
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    30
  • Captures
    20
  • Social Media
    40
    • Shares, Likes & Comments
      40
      • Facebook
        40

Article Description

This study aims to determine the plastic deformation characteristics of aluminum 5052-O based on non-associated flow rule. To achieve this goal, a new strain hardening model named as Kim-Tuan hardening model is proposed to perfectly describe the stress-strain relation of the studied material in terms of the uniaxial tensile test and to predict the material’s post-necking behavior. Additionally, the plastic behaviors of AL5052-O sheet are described by two approaches: the associated flow rule with YLD2000-2d yield function and the non-associated flow rule with Hill's quadratic function (NAFR-Hill48). The parameters of these functions were derived from the material properties that were obtained from uniaxial tensile tests and bulge test. The flow curve based on Kim-Tuan model and plastic behaviors obtained from two above-mentioned approaches were imported into a finite element analysis code to simulate the hydraulic bulge test for this material to confirm the precision of material characteristics achieved before. The simulation results based on the NAFR-Hill48 match well with the experiment results of bulge test while the YLD2000-2d provides highly accurate predictions for anisotropy of this material.

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