Structural Engineering and Mechanics

  • 제91권3호
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  • Pages.325-334
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  • 2024
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Modeling of truncated nanocompositeconical shell structures for dynamic stability response

  • S.M.R. Allahyari (Department of Mechanical Engineering, Dariun Branch, Islamic Azad University) ;
  • M. Shokravi (Energy Institute of Higher Education, Mehrab High School) ;
  • T.T. Murmy (Faculty of Mechanical Engineering, University of Hongkong)
  • 투고 : 2024.02.02
  • 심사 : 2024.07.10
  • 발행 : 2024.08.10
⟨ 이전 논문 다음 논문 ⟩

초록

This paper deals with the dynamic buckling behavior of truncated conical shells composed of carbon nanotube composites, an important area of study in view of their very wide engineering applications in aerospace industries. In this regard, the effective material properties of the nanocomposite have been computed using the Mori-Tanaka model, which has already been established for such analyses. The motion equations ruling the structure's behavior are derived using first order shear deformation theory, Hamilton's principle, and energy method. This will provide adequate background information on its dynamic response. In an effort to probe the dynamic instability region of the structure, differential quadrature method combined with Bolotin's method will be adopted to tackle the resulting motion equations, which enables efficient and accurate analysis. This work considers the effect of various parameters in the geometrical parameters and the volume fraction of CNTs on the structure's DIR. Specifically, it became clear that increasing the volume fraction of CNTs shifted the frequency range of the DIR to higher values, indicating the significant role of nanocomposite composition regarding structure stability.

키워드

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