Non-linear vibration of nanobeams with various boundary condition based on nonlocal elasticity theory

BAĞDATLI S. M.

Composites Part B: Engineering, vol.80, pp.43-52, 2015 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 80
  • Publication Date: 2015
  • Doi Number: 10.1016/j.compositesb.2015.05.030
  • Journal Name: Composites Part B: Engineering
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.43-52
  • Keywords: Nano-structures, Vibration, Analytical modelling, Nonlocal elasticity
  • Manisa Celal Bayar University Affiliated: Yes

Abstract

In this study, nonlinear vibrations of Euler-Bernoulli nanobeams with various supports condition is investigated. The non-linear equations of motion including stretching of the neutral axis are derived. Forcing and damping effects are included in the analysis. Exact solutions for the mode shapes and frequencies are obtained for the linear part of the problem. For the non-linear problem approximate solutions using perturbation technique is applied to the equations of motion. The different of support cases are investigated and the cases analyzed in detail. The method of multiple time scale that is a perturbation technique is applied to the equations of motion. Natural frequencies and mode shapes for the linear problem are found for the nanobeam. Nonlinear frequencies are calculated; amplitude and phase modulation figures are presented for different cases. Frequency-response curves are drawn.