Vibration behaviors of two-directional carbon nanotube reinforced functionally graded composite plates

KARAMANLI A. F., AYDOĞDU M.

Composite Structures, vol.262, 2021 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 262
  • Publication Date: 2021
  • Doi Number: 10.1016/j.compstruct.2021.113639
  • Journal Name: Composite Structures
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: Finite element method, Free vibration, Polymer matrix, Third order shear deformation theory, Two directional functionally graded carbon nanotube
  • Yıldız Technical University Affiliated: Yes

Abstract

The dynamical analysis of two directional functionally graded carbon nanotube reinforced composite (2DFG-CNTRC) plates are studied for various boundary conditions. The effects of the CNT distribution in the two directions on the dimensionless frequencies are investigated and compared with the unidirectional CNT distributions (1DFG-CNTRC) with respect to the variation of the CNT configuration, volume fraction and aspect ratio. Based on the variational formulation, the numerical results are obtained by using a finite element model. It is found that the volume fraction of the CNTs is affected with respect to the y direction and the difference between the dimensionless fundamental frequencies calculated based on the 2DFG-CNTRC and 1DFG-CNTRC configurations is significant. Moreover, for CFFF plates, the difference between the dimensionless frequencies obtained based on the 2DFG-CNTRC and 1DFG-CNTRC configurations is approximately 43.5% and 39% for 5th mode of the “U” and “V” type CNT configurations and 42% for 6th mode of the “X” type CNT configuration while the aspect ratio is set to 50.