New approach to gas pressure profile prediction for high temperature AA5083 sheet forming

Firas S. Jarrar, Louis G. Hector, Marwan K. Khraisheh, Allan F. Bower

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

A new theoretical approach to the prediction of gas pressure profiles that vary smoothly with time in high temperature forming of fine-grained AA5083 sheet is presented. The required pressure-flow stress relationship, which couples the gas pressure profile and the material constitutive model, was implemented in ABAQUS implicit. Forming of a rectangular pan in a die with variable entry radii was simulated with a single creep mechanism model that accounts for hardening/softening in AA5083. Predicted sheet thickness and thinning in a die entry radius region at the end of forming are examined in detail. Results are compared with those from two additional gas pressure schemes. One of these is taken directly from experiments and the other is based upon an algorithm that is internal to ABAQUS. The effect of friction on forming time is explored in the absence of a stability criterion for necking.

Original languageEnglish
Pages (from-to)825-834
Number of pages10
JournalJournal of Materials Processing Technology
Volume210
Issue number6-7
DOIs
Publication statusPublished - 1 Apr 2010

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Keywords

  • Finite element simulation
  • Friction
  • Quick plastic forming
  • Superplastic forming

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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