Transient response of oscillated carbon nanotubes with an internal and external damping - Publikacja - MOST Wiedzy

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Transient response of oscillated carbon nanotubes with an internal and external damping

Abstrakt

The present works aims at modeling a viscoelastic nanobeam with simple boundary conditions at the two ends with the introduction of the Kelvin-Voigt viscoelasticity in a nonlocal strain gradient theory. The nanobeam lies on the visco-Pasternak matrix in which three characteristic parameters have a prominent role. A refined Timoshenko beam theory is here applied, which is only based on one unknown variable, in accordance with the Euler-Bernoulli theory, whereas the Hamilton's principle is applied to derive the equations of motion. These are, in turn, solved for a carbon nanotube with some fixed material properties. An analytical method has been used to discretize the equations in the displacement field and time, while computing the time-response of the system. For validation purposes, the results based on the proposed formulation are successfully compared to several references. A final parametric investigation focuses on the sensitivity of the time-response of a nanotube under simple boundary conditions, to different parameters such as the length scale, the viscoelasticity coefficients or the nonlocal parameter.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
COMPOSITES PART B-ENGINEERING nr 158, strony 198 - 205,
ISSN: 1359-8368
Język:
angielski
Rok wydania:
2019
Opis bibliograficzny:
Malikan M., Dimitri R., Tornabene F.: Transient response of oscillated carbon nanotubes with an internal and external damping// COMPOSITES PART B-ENGINEERING -, (2019), s.198-205
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.compositesb.2018.09.092
Źródła finansowania:
  • Publikacja bezkosztowa
Weryfikacja:
Politechnika Gdańska

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