کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1578342 1514817 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crystal plasticity simulation of polycrystalline aluminum and the effect of mesh refinement on mechanical responses
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Crystal plasticity simulation of polycrystalline aluminum and the effect of mesh refinement on mechanical responses
چکیده انگلیسی

Plastic heterogeneities of polycrystalline aluminum during tensile test have been numerically investigated at grain level. Responses at several length scales are studied, including the overall stress, intergranular and intragranular stress–strain heterogeneities. Special attention is paid to the sensitivity of simulation with respect to the mesh refinement. The results show that, a coarse mesh containing about 500 grains is sufficient to predict the global stress–strain curve, with only one element per grain. About 5 elements per grain is enough to well describe the intergraunlar heterogeneities. However, at least 30 and 60 elements per grain should be used, in order to well describe the average deformation behavior of each grain and to capture most of the intragraunlar heterogeneities, respectively.


► 500 grains with one element per grain are sufficient to predict global responses.
► 5 elements per grain are needed for describing the interganular heterogeneities.
► 30 elements per grain are needed for describing the grain-averaged responses.
► 60 elements per grain are needed for describing the intragraunlar heterogeneities.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 528, Issues 22–23, 25 August 2011, Pages 6673–6679
نویسندگان
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