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Determination of the high strain rate forming properties of steel sheet
Verleysen, Patricia; Peirs, Jan; Duchene, Laurent
2011In Complas XI
Peer reviewed
 

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Keywords :
Forming process; Steel sheets; Forming Limit Diagram
Abstract :
[en] The strain rate dependence of the plastic yield and failure properties displayed by most metals affects energies, forces and forming limits involved in high speed forming processes. In this contribution a technique is presented to assess the influence of the strain rate on the forming properties of steel sheets. In a first step, static and high strain rate tensile experiments are carried out in order to characterize the materials strain rate dependent behaviour. In a second step, the phenomenological Johnson-Cook model and physically-based Voce model are used to describe the constitutive material behaviour. The test results are subsequently used to calculate the forming limit diagrams by a technique based on the Marciniak-Kuczynski model. With the developed technique, static and dynamic forming limit diagrams are obtained for a commercial DC04 steel and a laboratory made CMnAl TRIP steel. The results clearly indicate that increasing the strain rate during a forming process can have a positive or negative effect.
Disciplines :
Materials science & engineering
Author, co-author :
Verleysen, Patricia;  Ghent University > Department of Materials Science and Engineering
Peirs, Jan
Duchene, Laurent  ;  Université de Liège - ULiège > Département ArGEnCo > Analyse multi-échelles des matériaux et struct. du gén. civ.
Language :
English
Title :
Determination of the high strain rate forming properties of steel sheet
Publication date :
2011
Event name :
XI International Conference on Computational Plasticity Fundamentals and Applications
Event organizer :
E. Onate, D.R.J. Owen, D. Peric and B. Suarez (Eds)
Event place :
Barcelone, Spain
Event date :
du 7 au 9 septembre 2011
Audience :
International
Journal title :
Complas XI
Peer reviewed :
Peer reviewed
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since 24 February 2015

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