Advances in nano research

  • 제8권2호
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  • Pages.157-167
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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

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Dynamic characteristics of multi-phase crystalline porous shells with using strain gradient elasticity

  • Ahmed, Ridha A. (Al-Mustansiriah University, Engineering Collage) ;
  • Al-Maliki, Ammar F.H. (Al-Mustansiriah University, Engineering Collage) ;
  • Faleh, Nadhim M. (Al-Mustansiriah University, Engineering Collage)
  • 투고 : 2019.07.23
  • 심사 : 2019.10.25
  • 발행 : 2020.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper studies forced vibrational behavior of porous nanocrystalline silicon nanoshells under radial dynamic loads using strain gradient theory (SGT). This type of material contains many pores inside it and also there are nano-size grains which define the material character. The formulation for nanocrystalline nanoshell is provided by first order shell theory and a numerical approach is used in order to solve nanoshell equations. SGT gives a scale factor related to stiffness hardening provided by nano-grains. For more accurate description of size effects due to nano-grains or nano-pore, their surface energy influences have been introduced. Surface energy of inclusion exhibit extraordinary influence on dynamic response of the nanoshell. Also, dynamic response of the nanoshell is affected by the scale of nano-grain and nano-pore.

키워드

과제정보

The authors would like to thank Mustansiriyah university (www.uomustansiriyah.edu.iq) Baghdad-Iraq for its support in the present work.

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  1. Finite element simulation for investigation on thermal post-buckling of geometrically imperfect GOP-reinforced beam vol.12, pp.2, 2021, https://doi.org/10.12989/acc.2021.12.2.135
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