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  4. The concept of virtual material testing and its application to sheet metal forming simulations
 
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2016
Conference Paper
Title

The concept of virtual material testing and its application to sheet metal forming simulations

Abstract
A crystal plasticity based full-field microstructure simulation approach is used to virtually determine mechanical properties of sheet metals. Microstructural features like the specific grain morphology and the crystallographic texture are taken into account to predict the plastic anisotropy. A special focus is on the determination of the Lankford coefficients and on the yield surface under plane stress conditions. Compared to experimental procedures, virtual material testing allows to generate significantly more data points on the yield surface. This data is used to calibrate anisotropic elasto-plastic material models which are commonly used for sheet metal forming simulations. A numerical study is carried out to analyze the influence of the chosen points on the yield surface on the calibration procedure.
Author(s)
Butz, A.
Pagenkopf, J.
Baiker, M.
Helm, D.
Mainwork
Numisheet 2016, 10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes. Pt.B: General papers  
Funder
Bundesministerium für Wirtschaft und Technolgie BMWi (Deutschland)  
Conference
International Conference and Workshop Numerical Simulation of 3D Sheet Metal Forming Processes (Numisheet) 2016  
Open Access
DOI
10.1088/1742-6596/734/3/032107
Additional full text version
Landing Page
Language
English
Fraunhofer-Institut für Werkstoffmechanik IWM  
Keyword(s)
  • sheet metal

  • Virtual Lab

  • crystal plasticity

  • anisotropy

  • yield surface

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