Magnetic field effects on nonlocal wave dispersion characteristics of size-dependent nanobeams

被引：12
|
作者：
Ebrahimi, Farzad [1 ]
Barati, Mohammad Reza [1 ]
机构：
[1] Imam Khomeini Int Univ, Fac Engn, Dept Mech Engn, Qazvin, Iran
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2017年 / 123卷 / 01期
关键词：
NONLINEAR VIBRATION ANALYSIS; FG NANOBEAMS; BUCKLING ANALYSIS; DYNAMIC-ANALYSIS; BEAM THEORY; PROPAGATION; BEHAVIOR; MODELS; PLATE;
D O I：
10.1007/s00339-016-0646-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, wave propagation analysis of functionally graded size-dependent nanobeams embedded in elastic foundation exposed to a longitudinal magnetic field is conducted based on nonlocal elasticity theory. Material properties of nanobeam change gradually according to the sigmoid function. Applying an analytical solution, the acoustical and optical dispersion relations are explored for various wave number, nonlocality parameter, material composition, elastic foundation constants and magnetic field intensity. It is found that frequency and phase velocity of waves propagating in S-FGM nanobeam are significantly affected by these parameters. Also the presence of cutoff and escape frequencies in wave propagation analysis of embedded S-FGM nanobeams is investigated.
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页数：11
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