The present work demonstrates that the pencil glide mechanism is a physically reliable and a computationally efficient model to simulate the nonlinear behaviour of b.c.c. single and polycrystals. For that purpose, the pencil glide extension of Schmid’s criterion used by Gilormini [1] is incorporated in a single crystal model and in a homogenized polycrystal model accounting for large elastoviscoplastic deformations. The response of the pencil glide model in terms of stress-strain curves and lattice rotation is compared to the prediction based on the consideration of all slip systems. In the case of -iron single crystals both approaches are shown to accurately reproduce recent experimental results [2, 3]. The comparison is extended to -iron polycrystals behaviour under tension, compression, rolling and simple shear loading conditions. The evolution of crystallographic textures obtained either based on pencil glide or using the 24 slip systems is analyzed and compared to classical experimental results from the literature. Limitations of the approach, especially in the case of simple shear textures, are also pointed out. The pencil glide approach can be viewed as a reduced order model enhancing computational efficiency of crystal plasticity simulations involving many slip mechanisms.
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Lu Tuan Le 1; Kais Ammar 1; Samuel Forest 1
@article{CRMECA_2020__348_10-11_847_0, author = {Lu Tuan Le and Kais Ammar and Samuel Forest}, title = {Efficient simulation of single and poly-crystal plasticity based on the pencil glide mechanism}, journal = {Comptes Rendus. M\'ecanique}, pages = {847--876}, publisher = {Acad\'emie des sciences, Paris}, volume = {348}, number = {10-11}, year = {2020}, doi = {10.5802/crmeca.44}, language = {en}, }
TY - JOUR AU - Lu Tuan Le AU - Kais Ammar AU - Samuel Forest TI - Efficient simulation of single and poly-crystal plasticity based on the pencil glide mechanism JO - Comptes Rendus. Mécanique PY - 2020 SP - 847 EP - 876 VL - 348 IS - 10-11 PB - Académie des sciences, Paris DO - 10.5802/crmeca.44 LA - en ID - CRMECA_2020__348_10-11_847_0 ER -
%0 Journal Article %A Lu Tuan Le %A Kais Ammar %A Samuel Forest %T Efficient simulation of single and poly-crystal plasticity based on the pencil glide mechanism %J Comptes Rendus. Mécanique %D 2020 %P 847-876 %V 348 %N 10-11 %I Académie des sciences, Paris %R 10.5802/crmeca.44 %G en %F CRMECA_2020__348_10-11_847_0
Lu Tuan Le; Kais Ammar; Samuel Forest. Efficient simulation of single and poly-crystal plasticity based on the pencil glide mechanism. Comptes Rendus. Mécanique, Volume 348 (2020) no. 10-11, pp. 847-876. doi : 10.5802/crmeca.44. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.44/
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