Thickness distribution in a superplastically formed rectangular pan under plane-strain conditions

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Abstract

Superplastic forming of a sheet into a rectangular pan under plane-strain conditions is simulated numerically and the thickness distribution in a transverse section in the central region of the pan is presented. The thickness distribution resulting from female-die forming is studied, considering various affecting parameters such as friction conditions between sheet and die, draft angle, die entrance radius, inside corner curvature and width-to-depth ratio of the die. The effect of using a male die plus prior reverse blowing in order to improve the thickness distribution over the female die is investigated also.

Original languageEnglish
Pages (from-to)59-64
Number of pages6
JournalJournal of Materials Processing Technology
Volume65
Issue number1-3
DOIs
StatePublished - Mar 1997

Keywords

  • Sheet metal
  • Superplastic forming
  • Thickness distribution
  • Thin sheet forming

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