Structural Engineering and Mechanics

  • 제71권1호
  • /
  • Pages.89-98
  • /
  • 2019
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  • 1225-4568(pISSN)
  • /
  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Effects of porosity models on static behavior of size dependent functionally graded beam

  • Hamed, Mostafa A. (Mechanical Engineering Dept., Faculty of Engineering, King Abdulaziz University) ;
  • Sadoun, Ayman M. (Mechanical Engineering Dept., Faculty of Engineering, King Abdulaziz University) ;
  • Eltaher, Mohamed A. (Mechanical Engineering Dept., Faculty of Engineering, King Abdulaziz University)
  • 투고 : 2019.02.26
  • 심사 : 2019.03.20
  • 발행 : 2019.07.10
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, the mechanical bending behaviors of functionally graded porous nanobeams are investigated. Four types of porosity which are, the classical power porosity function, the symmetric with mid-plane cosine function, bottom surface distribution and top surface distribution are proposed in analysis of nanobeam for the first time. A comparison between four types of porosity are illustrated. The effect of nano-scale is described by the differential nonlocal continuum theory of Eringen by adding the length scale into the constitutive equations as a material parameter comprising information about nanoscopic forces and its interactions. The graded material is designated by a power function through the thickness of nanobeam. The beam is simply-supported and is assumed to be thin, and hence, the kinematic assumptions of Euler-Bernoulli beam theory are held. The mathematical model is solved numerically using the finite element method. Numerical results show effects of porosity type, material graduation, and nanoscale parameters on the static deflection of nanobeam.

키워드

과제정보

연구 과제 주관 기관 : King Abdulaziz University

참고문헌

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