کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6778547 1432069 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Wave propagation in viscoelastic thin cylindrical nanoshell resting on a visco-Pasternak foundation based on nonlocal strain gradient theory
ترجمه فارسی عنوان
انتشار موج در نانوساختار نازک استوانه ای نازک با پایه بر پایه واسکو-پاسترناک مبتنی بر نظریه گرادیان غیرنشینی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Wave propagation in viscoelastic single walled carbon nanotubes is investigated by accounting for the simultaneous effects of the nonlocal constant and the material length scale parameter. To this end, thin shell theory is used to model the viscoelastic single walled carbon nanotubes, and the nonlocal strain gradient theory is used to account for the effects of the nonlocal constant and the material length scale parameter. The Kelvin-Voigt model is used to model the viscoelastic property, and the governing equations are derived through Hamilton's principle. The viscoelastic single walled carbon nanotube medium is modeled as visco-Pasternak. The results demonstrate that viscoelastic single walled carbon nanotube rigidity is higher in the strain gradient theory and lower in the nonlocal theory in comparison to that in the classical theory. Also, the size effects, nanotube radius, circumferential wavenumber, nanotube damping coefficient, and foundation damping coefficient exert considerable effects on viscoelastic single walled carbon nanotube phase velocity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin-Walled Structures - Volume 122, January 2018, Pages 378-386
نویسندگان
, , ,