A numerical model for simulating temperature and speed effects in hot extrusion of rod

Jinn Jong Sheu, Rong Shean Lee

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

In this paper, a two-dimensional numerical model with upper-bound coupled thermal analysis has been developed. The model is capable of simulating the hot rod extrusion process with variable ram speeds. The temperature distributions and the speed effects in hot extrusion are predicted in detail by the proposed numerical model. A generalized kinematically-admissible velocity field without velocity discontinuity is adopted. The temperatures are calculated by considering simultaneously the heat generation due to deformation and friction and heat transfer. A finite-difference method with an implicit time integration scheme is utilized to solve the two-dimensional heat conduction problem. Two mathematical models for variable ram speed profiles are proposd. Ram speed profiles satisfying the exit temperature and the load requirements are obtained. The proposed numerical simulation has been demonstrated to be a powerful tool for the design of hot extrusion processes.

Original languageEnglish
Pages (from-to)985-998
Number of pages14
JournalInternational Journal of Mechanical Sciences
Volume33
Issue number12
DOIs
Publication statusPublished - 1991

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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