Effect of moving load on dynamics of nanoscale Timoshenko CNTs embedded in elastic media based on doublet mechanics theory

Faculty Engineering Year: 2022
Type of Publication: ZU Hosted Pages: 241-256
Authors:
Journal: STEEL AND COMPOSITE STRUCTURES Techno Press Volume: 2
Keywords : Effect , moving load , dynamics , nanoscale Timoshenko    
Abstract:
This manuscript illustrates the dynamic response of nanoscale carbon nanotubes (CNTs) embedded in an elastic media under moving load using doublet mechanics theory, which not considered before. CNTs are modelled by Timoshenko beam theory (TBT) and a bottom to up modelling nano-mechanics is simulated by doublet mechanics theory to capture the size effect of CNTs. To explore the influence of the CNTs configurations on the dynamic behaviour, both armchair and zigzag configurations are considered. The governing equations of motion and the associated boundary conditions are obtained using the Hamiltonian principle. The Navier solution methodology is applied to obtain the solutions for both orientations. Free vibration and forced response under moving loads are considered. The accuracy of the developed procedure is verified by comparing the obtained results with available previous algorithms and good agreement is observed. Parametric studies are conducted to demonstrate effects of doublet length scale, CNTs configurations, moving load velocities as well as the elastic media parameters on the dynamic behaviours of CNTs. The developed procedure is supportive in the design and manufacturing of MEMS/NEMS made from CNTs.
   
     
 
       

Author Related Publications

  • Alaa Ahmed Abd elrahman , "Vibrations and stress analysis of rotating perforated beams by using finite elements method", Techno-Press, Ltd., 2021 More
  • Alaa Ahmed Abd elrahman , "Vibration of nonlinear graduation of nano-Timoshenko beam considering the neutral axis position", Elsevier, 2014 More
  • Alaa Ahmed Abd elrahman , "Influence of surface energy on the nanoindentation response of elastically-layered viscoelastic materials", Springer, 2015 More
  • Alaa Ahmed Abd elrahman , "A numerical solution for quasistatic viscoelastic frictional contact problems", ASME, 2007 More
  • Alaa Ahmed Abd elrahman , "Effect of the material parameters on layered viscoelastic frictional contact systems", Hindawi Publishing Corporation, 2010 More

Department Related Publications

  • Ashraf Abdelfattah Ali Hassanein, "Hot-Pressed Electrospun PAN Nano Fibers: An Idea for Flexible Carbon Mat", Journal of Materials Processing Technology,2009; 209:4617-4620, 2009 More
  • Mohammed Abdelmoniem Mohamed Eltaher , "Determination of neutral axis position and its effect on natural frequencies of functionally graded macro/nanobeams", www.elsevier.com/locate/compstruct, 2014 More
  • Mohammed Abdelmoniem Mohamed Eltaher , "Coupling effects of nonlocal and surface energy on vibration analysis of nanobeams", www.elsevier.com, 2013 More
  • Marwa Ahmed Abdelbaky Salam , "Interlaminar shear behavior of unidirectional glass fiber (U)/random glass fiber (R)/epoxy hybrid and non-hybrid composite laminates", ScienceDirect, 2012 More
  • Marwa Ahmed Abdelbaky Salam , "Statistical analysis of monotonic mechanical properties for unidirectional glass fiber (U)/random glass fiber (R)/epoxy hybrid and non-hybrid polymeric composites", sage, 2013 More
Tweet