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Dynamic pull-in of thermal cantilever nanoswitches subjected to dispersion and axial forces using nonlocal elasticity theory

  • Fateme Tavakolian
  • Amin Farrokhabadi
  • Masoud SoltanRezaee
  • Sasan Rahmanian
Technical Paper
  • 44 Downloads

Abstract

Precise analysis of nanoelectromechanical systems has an outstanding contribution in performance improvement of such systems. In this research, the dynamic instability of a cantilever nanobeam connected to a horizontal spring is analyzed. The system is subjected to thermal, electrostatic and molecular (Casimir and van der Waals) forces. By applying the Eringen’s nonlocal elasticity theory, the equilibrium equations are derived. The nonlinear dynamics governing equations of the actuated thermal switch are solved by reduced order method. Finally, the effects of several system parameters on the dynamic behavior of the nanocantilever are examined in detail. It is concluded that considering the nonlocal theory results in increasing the rigidity of cantilever nanobeams, unlike fixed-fixed nanobeams. Furthermore, the nonlocality affects more significantly by increasing the temperature of cantilevers; however, it is completely the opposite for double-clamped beams. The obtained results can be considered for modeling and analysis of several thermal micro and nanosystems.

Notes

References

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Fateme Tavakolian
    • 1
  • Amin Farrokhabadi
    • 1
  • Masoud SoltanRezaee
    • 2
  • Sasan Rahmanian
    • 3
  1. 1.Department of Mechanical EngineeringTarbiat Modares UniversityTehranIran
  2. 2.Young Researchers and Elite Club, Najafabad BranchIslamic Azad UniversityNajafabadIran
  3. 3.Department of Mechanical EngineeringIran University of Science and TechnologyTehranIran

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