Influence of non-proportional load paths and change in loading direction on the failure mode of sheet metals

Wolfram Volk, Roman Norz, Matthias Eder, Hartmut Hoffmann

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Many studies have shown that failure following non-proportional load paths cannot be predicted by a linear Forming Limit Curve (FLC), as the deformation history and a change in loading direction influence the formability and failure mode. In this paper, the different failure modes due to different load paths are investigated, for the first time, by conducting Nakajima tests with pre-formed specimens. The main objective of the investigation is to better understand the influence of pre-forming and change in loading direction on the formability. To predict this behaviour, regardless of the failure mode, the Generalized Forming Limit Concept (GFLC) is extended.

Original languageEnglish
Pages (from-to)273-276
Number of pages4
JournalCIRP Annals - Manufacturing Technology
Volume69
Issue number1
DOIs
StatePublished - 2020

Keywords

  • Anisotropy
  • Failure
  • Forming

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