Prediction of FLD of sheet metals based on crystal plasticity model

Kim,J-B, Hong,S-H and Yoon,J 2014, Prediction of FLD of sheet metals based on crystal plasticity model, in NUMISHEET 2014 : Proceedings of the 9th International Conference and Workshop on Numerical Simulation 3D Sheet Metal Forming Processes, AIP Publishing, Melville, N.Y., pp. 374-377, doi: 10.1063/1.4849993.

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Title Prediction of FLD of sheet metals based on crystal plasticity model
Author(s) Kim,J-B
Hong,S-H
Yoon,JORCID iD for Yoon,J orcid.org/0000-0002-7616-5253
Conference name Numerical Simulation 3D Sheet Metal Forming Processes. Conference and Workshop (9th : 2014 : Melbourne, Victoria)
Conference location Melbourne, Victoria
Conference dates 2014/1/6 - 2014/1/10
Title of proceedings NUMISHEET 2014 : Proceedings of the 9th International Conference and Workshop on Numerical Simulation 3D Sheet Metal Forming Processes
Editor(s) Yoon,J
Rolfe,B
Beynon,J
Hodgson,P
Publication date 2014
Conference series Numerical Simulation 3D Sheet Metal Forming Processes Conference and Workshop
Start page 374
End page 377
Total pages 4
Publisher AIP Publishing
Place of publication Melville, N.Y.
Summary  In some advanced sheet metal forming processes such as the incremental forming process, a local fracture strain after necking is very important. In order to accurately predict necking and fracture phenomena, a crystal plasticity model is introduced in the finite element analysis of tensile tests. A tensile specimen is modeled by many grains that have their own crystalline orientation. And each of the grains is discretized by many elements. Using this analysis, necking behavior of a tensile specimen can be predicted without any initial imperfections. A damage model is also implemented to predict sudden drops of load carrying capacity after necking and to reflect the void nucleation and growth of the severely deformed region. From an analysis of the tensile test, the necking behavior is well predicted. Finally, analyses are carried out for various strain paths, and FLDs up to necking and fracture are predicted.
ISBN 9780735411951
ISSN 0094-243X
Language eng
DOI 10.1063/1.4849993
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 861199 Basic Metal Products (incl. Smelting
HERDC Research category E1 Full written paper - refereed
ERA Research output type E Conference publication
Copyright notice ©2014, AIP Publishing
Persistent URL http://hdl.handle.net/10536/DRO/DU:30070052

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