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Steel and Composite Structures Volume 35, Number 6, June25 2020 , pages 765-777 DOI: https://doi.org/10.12989/scs.2020.35.6.765 |
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Nonlinear forced vibrations of multi-scale epoxy/CNT/fiberglass truncated conical shells and annular plates via 3D Mori-Tanaka scheme |
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Seyed Sajad Mirjavadi, Masoud Forsat, Mohammad Reza Barati and AMS Hamouda
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| Abstract | ||
| In the context of classic conical shell formulation, nonlinear forced vibration analysis of truncated conical shells and annular plates made of multi-scale epoxy/CNT/fiberglass composites has been presented. The composite material is reinforced by carbon nanotube (CNT) and also fiberglass for which the material properties are defined according to a 3D Mori-Tanaka micromechanical scheme. By utilizing the Jacobi elliptic functions, the frequency-deflection curves of truncated conical shells and annular plates related to their forced vibrations have been derived. The main focus is to study the influences of CNT amount, fiberglass volume, open angle, fiber angle, truncated distance and force magnitude on forced vibrational behaviors of multi-scale truncated conical shells and annular plates. | ||
| Key Words | ||
| forced vibration; annular plate; conical shell; multi-scale composite; carbon nanotube; annular sector | ||
| Address | ||
| Seyed Sajad Mirjavadi and AMS Hamouda: Department of Mechanical and Industrial Engineering, Qatar University, P.O. Box 2713, Doha, Qatar Masoud Forsat: Department of Civil and Architectural Engineering, Qatar University, Doha, Qatar Mohammad Reza Barati: Fidar project Qaem Company, Darvazeh Dolat, Tehran, Iran | ||