کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1809626 1525206 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonlocal continuum-based modeling of breathing mode of nanowires including surface stress and surface inertia effects
ترجمه فارسی عنوان
مدل سازی غیرخطی مبتنی بر پیوستگی حالت تنفسی نانوسیم ها از جمله تنش سطحی و اثرات اینرسی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی

Nonlocal and surface effects significantly influence the mechanical response of nanomaterials and nanostructures. In this work, the breathing mode of a circular nanowire is studied on the basis of the nonlocal continuum model. Both the surface elastic properties and surface inertia effect are included. Nanowires can be modeled as long cylindrical solid objects. The classical model is reformulated using the nonlocal differential constitutive relations of Eringen and Gurtin–Murdoch surface continuum elasticity formalism. A new frequency equation for the breathing mode of nanowires, including small scale effect, surface stress and surface inertia is presented by employing the Bessel functions. Numerical results are computed, and are compared to confirm the validity and accuracy of the proposed method. Furthermore, the model is used to elucidate the effect of nonlocal parameter, the surface stress, the surface inertia and the nanowire orientation on the breathing mode of several types of nanowires with size ranging from 0.5 to 4 nm. Our results reveal that the combined surface and small scale effects are significant for nanowires with diameter smaller than 4 nm.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 440, 1 May 2014, Pages 43–47
نویسندگان
, , ,