Folding-shearing: Shrinking and stretching sheet metal with no thickness change

Julian Allwood, Christopher Cleaver, Evripides Loukaides, Omer Music, Adam Nagy-Sochacki

Research output: Contribution to journalArticlepeer-review

6 Citations (SciVal)
29 Downloads (Pure)


50% of all sheet metal is scrapped, mainly by trimming following deep-drawing. To combat this a novel process inspired by the mechanics of spinning is proposed and its feasibility is tested with a novel experimental rig. A sheet is first folded along its long axis and then drawn through a die-set in a state of shear to reduce its width with no average reduction of thickness. The performance and limits of the process are evaluated with a novel experimental rig and new analytical and numerical simulations. The extension from this pre-cursor process to a more general forming process is discussed.

Original languageEnglish
Pages (from-to)285-288
Number of pages4
JournalCIRP Annals - Manufacturing Technology
Issue number1
Early online date30 Apr 2019
Publication statusPublished - 2019


  • Bending
  • Shearing
  • Sheet metal

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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