کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7211726 1469331 2018 52 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Free vibrations of FG elastic Timoshenko nano-beams by strain gradient and stress-driven nonlocal models
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Free vibrations of FG elastic Timoshenko nano-beams by strain gradient and stress-driven nonlocal models
چکیده انگلیسی
Size-dependent vibrational behavior of functionally graded (FG) Timoshenko nano-beams is investigated by strain gradient and stress-driven nonlocal integral theories of elasticity. Hellinger-Reissner's variational principle is preliminarily exploited to establish the equations governing the elastodynamic problem of FG strain gradient Timoshenko nano-beams. Differential and boundary conditions of dynamical equilibrium of FG Timoshenko nano-beams, with nonlocal behavior described by the stress-driven integral theory, are formulated. Free vibrational responses of simple structures of technical interest, associated with nonlocal stress-driven and strain gradient strategies, are analytically evaluated and compared in detail. The stress-driven nonlocal model for FG Timoshenko nano-beams provides an effective tool for dynamical analyses of stubby composite parts of Nano-Electro-Mechanical Systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part B: Engineering - Volume 154, 1 December 2018, Pages 20-32
نویسندگان
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