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http://dx.doi.org/10.12989/gae.2022.28.5.455

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)
Publication Information
Geomechanics and Engineering / v.28, no.5, 2022 , pp. 455-461 More about this Journal
Abstract
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.
Keywords
beam theory; dynamic stability; nonlocal elasticity; porosities; thermal load;
Citations & Related Records
Times Cited By KSCI : 14  (Citation Analysis)
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