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Structural Engineering and Mechanics Volume 91, Number 6, September25 2024 , pages 567-581 DOI: https://doi.org/10.12989/sem.2024.91.6.567 |
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Economic optimization and dynamic analysis of nanocomposite shell conveying viscous fluid exposed to the moving load based on DQ-IQ method |
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Ali Chen, Omidreza Masoudian and Gholamreza Soleimani Jafari
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| Abstract | ||
| In this paper, an effort is made to present a detailed analysis of dynamic behavior of functionally graded carbon nanotube-reinforced pipes under the influence of an accelerating moving load. Again, the material properties of the nanocomposite pipe will be determined by following the rule of mixtures, considering a specific distribution and volume fraction of CNTs within the pipe. In the present study, temperature-dependent material properties have been considered. The Navier-Stokes equations are used to determine the radial force developed by the viscous fluid. The structural analysis has been carried out based on Reddy's higher-order shear deformation shell theory. The equations of motion are derived using Hamilton's principle. The resulting differential equations are solved using the Differential Quadrature and Integral Quadrature methods, while the dynamic responses are computed with the use of Newmark's time integration scheme. These are many parameters, ranging from those connected with boundary conditions to nanotube geometrical characteristics, velocity, and acceleration of the moving load, and, last but not least, volume fraction and distribution pattern of CNTs. The results indicate that any increase in the volume fraction of CNTs will lead to a decrease in the transient deflection of the structure. It is also observed that maximum displacement occurs with an increase in the load speed, slightly delayed compared to decelerating motion. | ||
| Key Words | ||
| DQ-IQ method, dynamic response, FG-CNT pipe, moving load, viscous fluid | ||
| Address | ||
| Ali Chen: Business School, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China Omidreza Masoudian: Department of Mechanical Engineering, University of Kashan, Kashan, Iran Gholamreza Soleimani Jafari: Department of Mechanical Engineering, Kashan Branch, Islamic Azad University, Kashan, Iran | ||