Vibration analysis of carbon nanotube-reinforced composite microbeams

Civalek O., Dastjerdi S., Akbas S. D., AKGÖZ B.

MATHEMATICAL METHODS IN THE APPLIED SCIENCES, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1002/mma.7069
  • Dergi Adı: MATHEMATICAL METHODS IN THE APPLIED SCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Compendex, INSPEC, MathSciNet, Metadex, zbMATH, Civil Engineering Abstracts
  • Anahtar Kelimeler: beam theories, carbon nanotube, reinforced beam, size effect, vibration, STRAIN GRADIENT THEORY, PULL-IN INSTABILITY, MECHANICAL-PROPERTIES, CYLINDRICAL-SHELLS, SHEAR DEFORMATION, BUCKLING ANALYSIS, THERMOMECHANICAL RESPONSE, NONLOCAL ELASTICITY, NONLINEAR RESPONSE, SANDWICH PLATES
  • Akdeniz Üniversitesi Adresli: Evet

Özet

In the present article, free vibration behavior of carbon nanotube-reinforced composite (CNTRC) microbeams is investigated. Carbon nanotubes (CNTs) are distributed in a polymeric matrix with four different patterns of the reinforcement. The material properties of the CNTRC microbeams are predicted by using the rule of mixture. The microstructure-dependent governing differential equations are derived by applying Hamilton's principle on the basis of couple stress theory and several beam theories. The obtained vibration equation is solved by using Navier's solution method. The effects of length scale parameter, length/thickness ratio, volume fraction and the reinforcement pattern of CNTs on frequencies are examined. It is observed that the biggest frequencies occur in X-Beam while O-Beam has the lowest ones. It is also found that the size effect is more prominent when the thickness of the beam is close to the length scale parameter and this effect nearly disappears as the thickness of the beam increases.