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Strain localization in multi slip crystal plasticity
Date
2015-07-06
Author
Yalçınkaya, Tuncay
Zıttı, Gıanluca
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URI
https://hdl.handle.net/11511/87886
Conference Name
European Solid Mechanics Conference, (06 - 10 Temmuz 2015)
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Unverified, Conference / Seminar
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The presentation outlines a temperature dependent, strain rate sensitive crystal plasticity model at finite strains which is aimed to be used in the modeling of strain path change effects for BCC structured materials. Plastic anisotropy in BCC crystals originates from different sources at different length scales. Slip asymmetry and intrinsic anisotropic effects caused by screw dislocation cores are the ones at the micro level, the development of dislocation sub-structures is relevant at meso lev...
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The developments in the micro-device industry has produced a substantial demand for the miniaturized metallic components with ultra-thin sheet materials that have thickness dimensions on the order of 50-500 mu m which are produced through micro-forming processes. It is essential to have predictive tools to simulate the constitutive behavior of the materials at this length scale taking into account the physical and statistical size effect. Recent studies have shown that on the scale of several micrometers an...
Strain gradient crystal plasticity: Intergranular microstructure formation
Özdemir, İzzet; Yalçınkaya, Tuncay (Springer International Publishing, 2016-01-01)
This chapter addresses the formation and evolution of inhomogeneous plastic deformation field between grains in polycrystalline metals by focusing on continuum scale modeling of dislocation-grain boundary interactions within a strain gradient crystal plasticity (SGCP) framework. Thermodynamically consistent extension of a particular strain gradient plasticity model, addressed previously (see also, e.g., Yalcinkaya et al, J Mech Phys Solids 59:1-17, 2011), is presented which incorporates the effect of grain ...
Strain gradient crystal plasticity: Intergranular microstructure formation
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T. Yalçınkaya and G. Zıttı, “Strain localization in multi slip crystal plasticity,” presented at the European Solid Mechanics Conference, (06 - 10 Temmuz 2015), Madrid, İspanya, 2015, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87886.