Surface effects on scale-dependent vibration behavior of flexoelectric sandwich nanobeams

EBRAHIMI F., KARIMIASL M., CİVALEK Ö., VINYAS M.

ADVANCES IN NANO RESEARCH, cilt.7, sa.2, ss.77-88, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 7 Sayı: 2
  • Basım Tarihi: 2019
  • Doi Numarası: 10.12989/anr.2019.7.2.077
  • Dergi Adı: ADVANCES IN NANO RESEARCH
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.77-88
  • Anahtar Kelimeler: vibration, piezoelectric sandwich nanobeam, flexoelectricity, surface effect, nonlocal elasticity theory, thermal effect, ELECTRO-MECHANICAL VIBRATION, SHEAR DEFORMATION-THEORY, NONLOCAL THEORIES, WAVE-DISPERSION, BEAMS, TEMPERATURE, STABILITY, MODEL, FILMS
  • Akdeniz Üniversitesi Adresli: Evet

Özet

This paper infer the transient vibration of piezoelectric sandwich nanobeams, In present work, the flexoelectric effect on the mechanical properties of vibration piezoelectric sandwich nanobeam with different boundary conditions is investigated. According to the Nonlocal elasticity theory in nanostructures, the flexoelectricity is believed to be authentic for such size-dependent properties. The governing equations are derived by Hamilton's principle and boundary condition solved by Galerkin-based solution. This research develops a nonlocal flexoelectric sandwich nanobeam supported by Winkler-Pasternak foundation. The results of this work indicate that natural frequencies of a sandwich nanobeam increase by increasing the Winkler and Pasternak elastic constant. Also, increasing the nonlocal parameter at a constant length decreases the natural frequencies. By increasing the length to thickness ratio (L/h) of nanobeam, the nonlocal frequencies reduce.