Advances in nano research

  • 제8권2호
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  • Pages.169-182
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  • 2020
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  • 2287-237X(pISSN)
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  • 2287-2388(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Dynamic characteristics of hygro-magneto-thermo-electrical nanobeam with non-ideal boundary conditions

  • Ebrahimi, Farzad (Mechanical Engineering Department, Engineering Faculty, Imam Khomeini International University) ;
  • Kokaba, Mohammadreza (Mechanical Engineering Department, Engineering Faculty, Imam Khomeini International University) ;
  • Shaghaghi, Gholamreza (Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University) ;
  • Selvamani, Rajendran (Department of Mathematics, Karunya University)
  • 투고 : 2019.04.05
  • 심사 : 2020.01.19
  • 발행 : 2020.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study presents the hygro-thermo-electromagnetic mechanical vibration attributes of elastically restrained piezoelectric nanobeam considering effects of beam surface for various elastic non-ideal boundary conditions. The nonlocal Eringen theory besides the surface effects containing surface stress, surface elasticity and surface density are employed to incorporate size-dependent effects in the whole of the model and the corresponding governing equations are derived using Hamilton principle. The natural frequencies are derived with the help of differential transformation method (DTM) as a semi-analytical-numerical method. Some validations are presented between differential transform method results and peer-reviewed literature to show the accuracy and the convergence of this method. Finally, the effects of spring constants, changing nonlocal parameter, imposed electric potential, temperature rise, magnetic potential and moisture concentration are explored. These results can be beneficial to design nanostructures in diverse environments.

키워드

참고문헌

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피인용 문헌

  1. Free vibration of electro-magneto-thermo sandwich Timoshenko beam made of porous core and GPLRC vol.10, pp.2, 2020, https://doi.org/10.12989/anr.2021.10.2.115