A general kinematically admissible velocity field for axisymmetric forging and its application to hollow disk forging

Sergei Alexandrov, Elena Lyamina, Yeau Ren Jeng

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An approach for selecting general kinematically admissible velocity fields for axisymmetric forging problems is outlined. The approach accounts for the existence of a rigid zone at frictional interfaces and for the singular behavior of real velocity fields in the vicinity of maximum friction surfaces. The plastic work rate for a material obeying the von Mises yield criterion and its associated flow rule is expressed in terms of one arbitrary function of a single argument, its derivative, and anti-derivative. An upper bound solution for constrained forging is given. Comparison with an available upper bound solution is made and it is shown that the new kinematically admissible velocity field results in a more accurate solution at high friction. Other problems that can be treated are briefly discussed.

Original languageEnglish
Pages (from-to)3113-3122
Number of pages10
JournalInternational Journal of Advanced Manufacturing Technology
Volume88
Issue number9-12
DOIs
Publication statusPublished - 2017 Feb 1

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Software
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering

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