On the nonlinear dynamics of a multi-scale hybrid nanocomposite disk

2020 ◽  
Author(s):  
Mehran Safarpour ◽  
Farzad Ebrahimi ◽  
Mostafa Habibi ◽  
Hamed Safarpour
Keyword(s):  
Nonlinear Dynamics ◽  
Hybrid Nanocomposite ◽  
Multi Scale

On the nonlinear dynamics of the multi-scale hybrid nanocomposite-reinforced annular plate under hygro-thermal environment

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
M. S. H. Al-Furjan ◽  
Reza Dehini ◽  
Masoud Paknahad ◽  
Mostafa Habibi ◽  
Hamed Safarpour
Keyword(s):  
Nonlinear Dynamics ◽  
Annular Plate ◽  
Thermal Environment ◽  
Hybrid Nanocomposite ◽  
Multi Scale

scholarly journals Agglomeration Effects on Static Stability Analysis of Multi-Scale Hybrid Nanocomposite Plates

2020 ◽  
Vol 62 (3) ◽  
pp. 41-64 ◽  
Author(s):  
Farzad Ebrahimi ◽  
Ali Dabbagh ◽  
Abbas Rastgoo ◽  
Timon Rabczuk
Keyword(s):  
Stability Analysis ◽  
Static Stability ◽  
Hybrid Nanocomposite ◽  
Multi Scale ◽  
Agglomeration Effects

Wave dispersion characteristics of agglomerated multi-scale hybrid nanocomposite beams

2019 ◽  
Vol 54 (4) ◽  
pp. 276-289 ◽  
Author(s):  
Farzad Ebrahimi ◽  
Ali Seyfi ◽  
Ali Dabbagh
Keyword(s):  
Beam Theory ◽  
Wave Dispersion ◽  
Wave Frequency ◽  
Equivalent Material ◽  
Hybrid Nanocomposite ◽  
Governing Equations ◽  
Mechanical Responses ◽  
Multi Scale ◽  
Constituent Material ◽  
Kinetic Relations

Herein, the agglomeration effect of nanoparticles on the wave dispersion of multi-scale hybrid nanocomposite beams is investigated. The constituent material consists of both macro- and nano-reinforcements which are dispersed in the polymer matrix. Homogenization is conducted according to the well-known micromechanical methods. Herein, the combination of the Eshelby–Mori–Tanaka model and the rule of the mixture is implemented in order to estimate the equivalent material properties of the nanocomposite beam. Also, a refined higher-order beam theory is used in order to calculate the kinetic relations free from utilizing an additional factor to account for the shear deformation. Furthermore, the governing equations are achieved by applying Hamilton’s principle. Then, the governing equations are solved analytically to enrich the wave frequency. The effects of various parameters on the variation in wave frequency and phase velocity of the multi-scale hybrid nanocomposite beam are studied. The results of this study reveal that the mechanical responses of the system decrease whenever the nanotubes are inside the clusters.

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