Techno Press
You logged in as Techno Press

You have a Free online access/download for a limited time.
Advances in Nano Research
  Volume 5, Number 1, March 2017, pages 35-47
DOI: http://dx.doi.org/10.12989/anr.2017.5.1.035
 

Analytical investigation of the surface effects on nonlocal vibration behavior of nanosize curved beams
Farzad Ebrahimi and Mohsen Daman

 
Abstract     [Full Text]
    This paper deals with free vibration analysis of nanosize rings and arches with consideration of surface effects. The Gurtin-Murdach model is employed for incorporating the surface effect parameters including surface density, while the small scale effect is taken into consideration based on nonlocal elasticity theory of Eringen. An analytical Navier solution is presented to solve the governing equations of motions. Comparison between results of the present work and those available in the literature shows the accuracy of this method. It is explicitly shown that the vibration characteristics of the curved nanosize beams are significantly influenced by the surface density effects. Moreover, it is shown that by increasing the nonlocal parameter, the influence of surface density reduce to zero, and the natural frequency reaches its classical value. Numerical results are presented to serve as benchmarks for future analyses of nanosize rings and arches.
 
Key Words
    radial vibration analysis; nanosize rings and arches; curved nanobeams; surface effects
 
Address
Mechanical Engineering Department, Faculty of Engineering, Imam Khomeini International University, Qazvin, P.O.B. 16818-34149, Iran.
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2020 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: technop@chol.com