A New Approach to the Evaluation of Forming Limits in Sheet Metal Forming

Marion Merklein; Andreas Maier; Daniel Kinnstätter; Christian Jaremenko; Emanuela Affronti

doi:10.4028/www.scientific.net/KEM.639.333

Paper Titles

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Structural and Frictional Performance of Fused Deposition Modelled Acrylonitrile Butadiene Styrene (P430) with a View to Use as Rapid Tooling Material in Sheet Metal Forming
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A New Approach to the Evaluation of Forming Limits in Sheet Metal Forming
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Analysis of Tensile Test of Titanium EBW Sheet
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Effect of Pre-Compressive Strain on Work-Hardening Behavior upon Two-Step Loading in a Magnesium Alloy Sheet
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Cold Formability of Automotive Sheet Metals: Anisotropy, Localization, Damage and Ductile Fracture
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Investigation on the Strain Behaviour of a Precipitation-Hardenable Aluminium Alloy through a Temperature Gradient Based Heat Treatment
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 639A New Approach to the Evaluation of Forming Limits...

A New Approach to the Evaluation of Forming Limits in Sheet Metal Forming

Abstract:

The forming limit diagram (FLD) is at the moment the most important method for the prediction of failure within sheet metal forming operations. Key idea is the detection of the onset of necking in dependency of different sample geometry. Whereas the standardized evaluation methods provides very robust and reliable results for conventional materials like deep drawing steels, the determined forming limits for modern light materials are often too conservative due to the different failure behavior. Therefore, within this contribution a new and innovative approach for the identification of the onset of necking will be presented. By using a pattern recognition-based approach in combination with an optical strain measurement system the complete strain history during the test can be evaluated. The principal procedure as well as the first promising results are presented and discussed.

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Periodical:

Key Engineering Materials (Volume 639)

Pages:

333-338

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.639.333

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Online since:

March 2015

Authors:

Marion Merklein, Andreas Maier, Daniel Kinnstätter, Christian Jaremenko, Emanuela Affronti*

Keywords:

Metal Forming, Pattern Recognition, Sheet Metal

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* - Corresponding Author

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