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Advances in Nano Research
  Volume 7, Number 2, March 2019, pages 99-108
DOI: http://dx.doi.org/10.12989/anr.2019.7.2.099
 

Free vibration analysis Silicon nanowires surrounded by elastic matrix by nonlocal finite element method
Büşra Uzun and Ömer Civalek

 
Abstract     [Full Text]
    Higher-order theories are very important to investigate the mechanical properties and behaviors of nanoscale structures. In this study, a free vibration behavior of SiNW resting on elastic foundation is investigated via Eringen\'s nonlocal elasticity theory. Silicon Nanowire (SiNW) is modeled as simply supported both ends and clamped-free Euler-Bernoulli beam. Pasternak two-parameter elastic foundation model is used as foundation. Finite element formulation is obtained nonlocal Euler-Bernoulli beam theory. First, shape function of the Euler-Bernoulli beam is gained and then Galerkin weighted residual method is applied to the governing equations to obtain the stiffness and mass matrices including the foundation parameters and small scale parameter. Frequency values of SiNW is examined according to foundation and small scale parameters and the results are given by tables and graphs. The effects of small scale parameter, boundary conditions, foundation parameters on frequencies are investigated.
 
Key Words
    nonlocal elasticity; nano beam; Euler Bernoulli beam theory; finite element formulation
 
Address
(1) Büşra Uzun:
Uludağ University, Civil Engineering Department, Bursa-Turkiye;
(2) Ömer Civalek:
Akdeniz University, Civil Engineering Department, Antalya-Turkiye.
 

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