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Prediction of fracture initiation in square cup drawing of DP980 using an anisotropic ductile fracture criterion

Park, N., Huh, H. and Yoon, J. W. 2017, Prediction of fracture initiation in square cup drawing of DP980 using an anisotropic ductile fracture criterion, in IDDRG 2017: Materials Modelling and Testing for Sheet Metal Forming : Proceedings of the International Deep Drawing Research Group, IOP Publishing,, pp. 1-8, doi: 10.1088/1742-6596/896/1/012111.

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Title Prediction of fracture initiation in square cup drawing of DP980 using an anisotropic ductile fracture criterion
Author(s) Park, N.
Huh, H.
Yoon, J. W.ORCID iD for Yoon, J. W. orcid.org/0000-0002-7616-5253
Conference name International Deep Drawing Research Group. Conference (36th : 2017 : Munich, Germany)
Conference location Munich, Germany
Conference dates 2017/07/02 - 2017/07/06
Title of proceedings IDDRG 2017: Materials Modelling and Testing for Sheet Metal Forming : Proceedings of the International Deep Drawing Research Group
Editor(s) Unknown
Publication date 2017
Series Journal of physics: conference series v.896
Start page 1
End page 8
Total pages 8
Publisher IOP Publishing
Keyword(s) Bristol, Eng.
Science & Technology
Technology
Engineering, Manufacturing
Materials Science, Multidisciplinary
Engineering
Materials Science
SHEAR FAILURE
GURSON MODEL
SHEET METALS
Summary This paper deals with the prediction of fracture initiation in square cup drawing of DP980 steel sheet with the thickness of 1.2 mm. In an attempt to consider the influence of material anisotropy on the fracture initiation, an uncoupled anisotropic ductile fracture criterion is developed based on the Lou - Huh ductile fracture criterion. Tensile tests are carried out at different loading directions of 0°, 45°, and 90° to the rolling direction of the sheet using various specimen geometries including pure shear, dog-bone, and flat grooved specimens so as to calibrate the parameters of the proposed fracture criterion. Equivalent plastic strain distribution on the specimen surface is computed using Digital Image Correlation (DIC) method until surface crack initiates. The proposed fracture criterion is implemented into the commercial finite element code ABAQUS/Explicit by developing the Vectorized User-defined MATerial (VUMAT) subroutine which features the non-associated flow rule. Simulation results of the square cup drawing test clearly show that the proposed fracture criterion is capable of predicting the fracture initiation with sufficient accuracy considering the material anisotropy.
ISSN 1742-6588
1742-6596
Language eng
DOI 10.1088/1742-6596/896/1/012111
Field of Research 091006 Manufacturing Processes and Technologies (excl Textiles)
091309 Tribology
02 Physical Sciences
09 Engineering
HERDC Research category E1 Full written paper - refereed
ERA Research output type E Conference publication
Copyright notice ©2017, IOP Publishing
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30112353

Document type: Conference Paper
Collections: School of Engineering
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.