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Computers and Concrete Volume 24, Number 5, November 2019 , pages 445-452 DOI: https://doi.org/10.12989/cac.2019.24.5.445 |
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Dynamic stress, strain and deflection analysis of pipes conveying nanofluid buried in the soil medium considering damping effects subjected to earthquake load |
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M. Heydari Nosrat Abadi, H. Hassanpour Darvishi and A.R. Zamani Nouri
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| Abstract | ||
| In this paper, dynamic stress, strain and deflection analysis of concrete pipes conveying nanoparticles-water under the seismic load are studied. The pipe is buried in the soil which is modeled by spring and damper elements. The Navier-Stokes equation is used for obtaining the force induced by the fluid and the mixture rule is utilized for considering the effect of nanoparticles. Based on refined two variables shear deformation theory of shells, the pipe is simulated and the equations of motion are derived based on energy method. The Galerkin and Newmark methods are utilized for calculating the dynamic stress, strain and deflection of the concrete pipe. The influences of internal fluid, nanoparticles volume percent, soil medium and damping of it as well as length to diameter ratio of the pipe are shown on the dynamic stress, strain and displacement of the pipe. The results show that with enhancing the nanoparticles volume percent, the dynamic stress, strain and deflection decrease. | ||
| Key Words | ||
| dynamic response; soil medium; fluid; damping; nanoparticles | ||
| Address | ||
| M. Heydari Nosrat Abadi, H. Hassanpour Darvishi and A.R. Zamani Nouri: Department of Civil Engineering, Engineering and Management of Water Resources, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran | ||