کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
277967 1430249 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analytical formulations of image forces on dislocations with surface stress in nanowires and nanorods
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Analytical formulations of image forces on dislocations with surface stress in nanowires and nanorods
چکیده انگلیسی

The interaction between dislocations and surfaces is usually characterized by image forces. Most analytical solutions to image forces could be found in literatures for two-dimensional (2D) solids with or without the consideration of surface stress. This work provides alternative analytical formulations of image forces for nanowires which are in more flexible forms compared with the infinite power series solutions from complex variable method. Moreover, this work proposes analytical formulations of image forces for nanorods (3D) by approximating the 3D shape effect as a height-dependent shape function, which is obtained through curve fitting of the finite element results of image forces without surface stress. The results of nanowires are demonstrated to be acceptable compared with the classical solution and complex variable method. More importantly, the analytical formulation of nanorods has not been found in other literatures so far. This work could contribute to nanostructure design and provide guidance for the fabrication of high quality nanostructures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 50, Issues 25–26, December 2013, Pages 4341–4348
نویسندگان
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