Forming Limit Diagram Predictions Using a Self-Consistent Crystal Plasticity Model: A Parametric Study

Youngung Jeong; Minh Son Pham; Mark Iadicola; Adam Creuziger

doi:10.4028/www.scientific.net/KEM.651-653.193

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 651-653Forming Limit Diagram Predictions Using a...

Forming Limit Diagram Predictions Using a Self-Consistent Crystal Plasticity Model: A Parametric Study

Abstract:

A numerical model to predict forming limit diagrams (FLD) for polycrystalline metal sheets is presented. In it, the Marciniak-Kuczynski (MK) approach is incorporated into the framework of the viscoplastic self-consistent (VPSC) crystal plasticity model. The current model, dubbed the VPSC-FLD, can run simulations along individual loading paths in parallel, which can make use of a CPU-cluster to enhance the computational speed. The main objective of the current work is to provide a detailed sensitivity report based on the VPSC-FLD. First of all, the influence of the initial inhomogeneity, f , as defined in the MK approach, is illustrated. Secondly, FLDs resulting from various sizes of the statistical population for the crystallographic texture are examined. Lastly, the computation time spent for various sizes of the statistical population is given.

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Periodical:

Key Engineering Materials (Volumes 651-653)

Pages:

193-198

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.651-653.193

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Online since:

July 2015

Authors:

Youngung Jeong*, Minh Son Pham, Mark Iadicola, Adam Creuziger

Keywords:

Crystal Plasticity, Forming Limit Diamgram, Marciniak-Kuczynski Model, VPSC

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