| About this Abstract |
| Meeting |
NUMISHEET 2022: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
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| Symposium
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NUMISHEET 2022
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| Presentation Title |
Decoding the Stress-strain Diagram of FCC Metals for Formability Assessment: Evolution of Soft Zones with Strain under Bi-axial Stresses |
| Author(s) |
Shigeo Saimoto, Kaan Inal, Bradley Diak, Marek Niewczas |
| On-Site Speaker (Planned) |
Shigeo Saimoto |
| Abstract Scope |
The challenging issue with respect to formability under bi-axial strain-states is the formation of necks in the sheet locations undergoing plane strain. Previous modelling of slit-like nano-voids and its growth have resulted in FLD [1]. The current study is to examine the changes in evolution of the distribution of nano-void nuclei and soft zones under different bi-axial strain states. The new discovery has been that the amount of dynamic dislocation annihilation increases with the reduction in slip systems in accord with the observation that cube texture is most resistant to localized necking. Constitutive relations for any biaxial strain-states [2] are used to compare the predicted limit strains.
[1] S. Saimoto, B.J. Diak and D.J. Lloyd, Philos. Mag.92 (2012) 1915-1936.
[2] S. Saimoto, P. Van Houtte, K. Inal and M.R. Langille, New biaxial yield function for aluminum alloys based on plastic work and work-hardening analyses, Acta Mater. 118 (2016) 109-119. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |