Geomechanics and Engineering

  • 제28권5호
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  • Pages.455-461
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  • 2022
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Numerical assessment of nonlocal dynamic stability of graded porous beams in thermal environment rested on elastic foundation

  • Al-Toki, Mouayed H.Z. (Middle Technical University, Technical College) ;
  • Ali, Hayder A.K. (Al Mustansiriah University, Engineering Collage) ;
  • Faleh, Nadhim M. (Al Mustansiriah University, Engineering Collage) ;
  • Fenjan, Raad M. (Al Mustansiriah University, Engineering Collage)
  • 투고 : 2020.01.16
  • 심사 : 2021.12.18
  • 발행 : 2022.03.10
⟨ 이전 논문 다음 논문 ⟩

초록

Numerical assessment of the dynamic stability behavior of nonlocal beams rested on elastic foundation has been provided in the present research. The beam is made of fucntional graded (FG) porous material and is exposed to thermal and humid environments. It is also consiered that the beam is subjected to axial periodic mechanical load which especific exitation frequency leading to its instability behavior. Beam modeling has been performed via a two-variable theory developed for thick beams. Then, nonlocal elasticity has been used to establish the governing equation which are solved via Chebyshev-Ritz-Bolotin method. Temperature and moisture variation showed notable effects on stability boundaries of the beam. Also, the stability boundaries are affected by the amount of porosities inside the material.

키워드

과제정보

The authors would like to thank Mustansiriyah university (www.uomustansiriyah.edu.iq) Baghdad-Iraq and Middle Technical University (https://www.mtu.edu.iq) for their support in the present work.

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