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Modified Mohr-Coulomb fracture model for anisotropic sheet materials under limited triaxial stress conditions
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.
of the Mohr-Coulomb Model.
History
Event
Numerical Simulation 3D Sheet Metal Forming Processes. Conference and Workshop (9th : 2014 : Melbourne, Victoria)Volume
1567Pagination
562 - 566Publisher
AIP PublishingLocation
Melbourne, VictoriaPlace of publication
Melville, N.Y.Publisher DOI
Start date
2014-01-06End date
2014-01-10ISSN
0094-243XISBN-13
9780735411951Language
engPublication classification
E Conference publication; E1 Full written paper - refereedCopyright notice
2014, AIP PublishingEditor/Contributor(s)
J Yoon, B Rolfe, J Beynon, P HodgsonTitle of proceedings
NUMISHEET 2014 : Proceedings of the 9th International Conference and Workshop on Numerical Simulation 3D Sheet Metal Forming ProcessesUsage metrics
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