کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
498957 863020 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced numerical study of infinitesimal non-linear Cosserat theory based on the grain size length scale assumption
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Enhanced numerical study of infinitesimal non-linear Cosserat theory based on the grain size length scale assumption
چکیده انگلیسی

A non-linear Cosserat theory involving the Arbitrary Lagrangian–Eulerian (ALE) method has been introduced into the brittle isotropic materials (amorphous glass and cement mortar) using the Modified Brazilian Disk (MBD) under an uni-axial compressive loading. These numerical experiments shed light on the nature of the Cosserat-based media and material moduli determination which are difficult to acquire using the most well-known experimental viewpoints. By using the identical micro-rotation constants α=β=γ=μLG2andΨ=2/3, the Cosserat moduli reduce to only four constants for the 3D cases. According to the results obtained in this paper, the present methodology substantiates that the Cosserat theory would be readily applied to the wide range of materials from the full amorphous materials to the heterogeneous materials by changing the length scale parameter. Some fresh routes and new outlooks are discussed afterwards.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 199, Issues 45–48, 15 November 2010, Pages 2892–2902
نویسندگان
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