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Production Engineering
Published in: Production Engineering 3/2016

05-05-2016 | Production Process

A new approach for user-independent determination of formability of a steel sheet sheared edge

Authors: Matthias Schneider, Ilya Peshekhodov, Anas Bouguecha, Bernd-Arno Behrens

Published in: Production Engineering | Issue 3/2016

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Abstract

It is common to use a forming limit curve (FLC) for a feasibility study of a deep-drawn steel part based on a finite element analysis (FEA). However, in such an approach a neglected fact is that a blank edge in industrial production is often produced by shear cutting. Especially, for many high strength steel grades, this cutting process notably reduces edge formability. An overestimation of formability of the blank edge, with an FLC, is the consequence that may lead to cracks at the sheared edge of a part. The following paper describes a new approach to determine formability of a sheet-steel sheared edge by hole expansion test that uses an FLC tool set. This approach delivers a hole expansion ratio with considerably lower scattering compared to the hole expansion according to ISO 16630. Additionally, information on the planar isotropy, flow and necking behavior of the material, is supplied. Finally, a pragmatical way of transferring test results into an FEA of the forming process for a sheet blank with a sheared edge is presented.
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Metadata
Title
A new approach for user-independent determination of formability of a steel sheet sheared edge
Authors
Matthias Schneider
Ilya Peshekhodov
Anas Bouguecha
Bernd-Arno Behrens
Publication date
05-05-2016
Publisher
Springer Berlin Heidelberg
Published in
Production Engineering / Issue 3/2016
Print ISSN: 0944-6524
Electronic ISSN: 1863-7353
DOI
https://doi.org/10.1007/s11740-016-0677-4

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