کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
521560 867775 2009 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An efficient three-dimensional adaptive quasicontinuum method using variable-node elements
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
An efficient three-dimensional adaptive quasicontinuum method using variable-node elements
چکیده انگلیسی

A new quasicontinuum (QC) implementation using the so-called “variable-node finite elements” is reported in this work. Tetrahedral elements, which have been exclusively utilized for the conventional QC are replaced by hexahedral elements in conjunction with the so-called variable-node elements. This enables an effective adaptive mesh refinement in QC, leading to fast and efficient simulations compared with the conventional QC. To confirm the solution accuracy, comparison is made for a nanoindentation problem with a molecular dynamics simulation as well as a molecular mechanics solution. Further examples of nanoindentation are shown and discussed to demonstrate the effectiveness of the present scheme.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 228, Issue 13, 20 July 2009, Pages 4789–4810
نویسندگان
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