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Analytical and experimental study of wrinkling in electromagnetic tube compression

  • Hossein Savadkoohian
  • Alireza Fallahi Arezoodar
  • Behrooz Arezoo
ORIGINAL ARTICLE

Abstract

Electromagnetic forming is a high-speed forming technology where electromagnetic forces are used to form metallic products. Tubular hollow workpieces can be compressed or expanded and sheet metal ones can be formed or welded. Under certain conditions, some defects like tearing or wrinkling could occur in this process. In the present work, wrinkling in electromagnetic tube compression is studied through analytical energy method. Effects of discharge voltage, tube thickness, and die entrance radius on energy criterion and finally on wrinkling are investigated. An algorithm is introduced to select process parameters which lead to minimum wrinkling; when the bead depth is specified. Experimental tests are performed to validate the analytical models. Out of roundness of the formed tubes are selected as the wrinkling criterion. Based on the results, the die entrance radius has more considerable effects on the bead depth and wrinkling, compared to discharge voltage and tube thickness. Experimental results are in good agreement with the analytical results.

Keywords

Electromagnetic forming Tube compression Wrinkling Energy method Bead depth 

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Copyright information

© Springer-Verlag London 2017

Authors and Affiliations

  • Hossein Savadkoohian
    • 1
  • Alireza Fallahi Arezoodar
    • 1
  • Behrooz Arezoo
    • 1
  1. 1.Department of Mechanical EngineeringAmirkabir University of TechnologyTehranIran

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