Complex incremental sheet forming using back die support on aluminium 2024, 5083 and 7075 alloys

Nagarajan Devarajan, Giribaskar Sivaswamy, Rahul Bhattacharya, David P. Heck, Muhammad Amir Siddiq

Research output: Contribution to journalConference Contribution

17 Citations (Scopus)

Abstract

The complex prototype forming of an industrial component was investigated on AA2024, 5083 and 7075 sheets using the incremental sheet forming approach. Fracture occurred at the top of crevice and steeper wall angle region for AA2024 and 7075, respectively, whereas no fracture in the AA5083 alloy. Thinning was higher at the steeper wall angle for all the alloys, from both the experimental and finite element analysis. It is speculated that the typical tensile nature of loading and the associated thinning of the material at these regions caused plastic instability in the material thereby creating micro-cracks that resulted in the failure of the component.
Original languageEnglish
Pages (from-to)2298–2304
Number of pages7
JournalProcedia Engineering
Volume81
DOIs
Publication statusPublished - 15 Oct 2014
Event11th International Conference on Technology of Plasticity, ICTP 2014 - Nagoya, Japan
Duration: 19 Oct 201424 Oct 2014

Keywords

  • incremental sheet forming
  • aluminium alloys
  • Nakajima test
  • forming limit curves
  • digital image correlation

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