Experimental and numerical analyses of magnetic pulse forming of A1050 aluminum sheet

Takashi Kambe, Yasutaka Kedo, Shinji Muraishi, Shinji Kumai

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

An A1050 aluminum sheet was collided against a steel mold with a small V-shaped through-thickness groove by using magnetic pulse forming (MPF) at various charging energy conditions. Deformation behavior of the sheet was also reproduced by using a series of numerical analyses. The groove was filled at high charging energy condition. Almost no change in grain morphology was observed at the mid-thickness area of the sheet, but extremely large intensive deformation occurred at the metal surface region along the slope of the mold. Deformation of the MPFed Al sheet was numerically analyzed by using ANSYS Emag-Mechanical. Electromagnetic force and deformation of the sheet was reproduced, and the impact velocity of the sheet to the mold was obtained. Deformation behavior of Al under various impact velocity conditions was analyzed by using Smoothed Particle Hydrodynamics (SPH) method of ANSYS AUTODYN. The groove was completely filled with Al at the high impact velocity condition, and an extremely large plastic strain and strain rate were observed only at the sheet surface. These simulation results corresponded very well to the final shape and the local microstructure change observed in the MPFed Al sheet.

Original languageEnglish
Pages (from-to)346-354
Number of pages9
JournalMaterials Transactions
Volume61
Issue number2
DOIs
Publication statusPublished - 2020
Externally publishedYes

Keywords

  • Magnetic pulse forming
  • Microstructure change
  • Numerical analysis
  • Plastic strain distribution
  • Strain rate distribution

ASJC Scopus subject areas

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

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