Modified Mohr-Coulomb fracture model for anisotropic sheet materials under limited triaxial stress conditions

Stoughton,TB and Yoon,J 2014, Modified Mohr-Coulomb fracture model for anisotropic sheet materials under limited triaxial stress conditions, 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. 562-566, doi: 10.1063/1.4850036.

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Title Modified Mohr-Coulomb fracture model for anisotropic sheet materials under limited triaxial stress conditions
Author(s) Stoughton,TB
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 562
End page 566
Total pages 5
Publisher AIP Publishing
Place of publication Melville, N.Y.
Summary  This paper reviews recent work of the authors to model necking and fracture for anisotropic materials, which requires consideration of the stress conditions that vary through the thickness of the sheet, and in particular, taking into consideration the conditions at individual integration points. Although the prior work adequately addresses the roll of triaxial stress conditions on necking, the fracture model developed in the prior work was limited in its application to analysis of plane-stress conditions. In this work, a fracture model is developed for application to a limited range of triaxial stress conditions, in which the through-thickness shear stresses are assumed to be negligible, but the normal stress is allowed to be non-zero. The model is extended in a way that reduces to the prior anisotropic fracture model under plane stress conditions, but includes the contribution of a triaxial stress condition in a way that retains the desired features
of the Mohr-Coulomb Model.
ISBN 9780735411951
ISSN 0094-243X
Language eng
DOI 10.1063/1.4850036
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:30070051

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