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Size-Dependent Pull-In Instability of Electrically Actuated Functionally Graded Nano-Beams Under Intermolecular Forces

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Iranian Journal of Science and Technology, Transactions of Mechanical Engineering Aims and scope Submit manuscript

Abstract

Pull-in instability of a cantilever beam-type nano-actuator made of functionally graded material is investigated using the strain gradient theory under the influence of electrostatic and intermolecular forces. Differential quadrature method is used to solve the nonlinear governing equation of nano-beam; the size effects, different materials and different volume fractions are examined. Results obtained from this model and numerical solution method are in good agreement with the experimental results mentioned in the references. Besides, the results demonstrate that size effect and amount of volume fraction have a substantial effect on the pull-in instability behavior of beam-type nano-actuator.

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Authors and Affiliations

  1. Mechanical Engineering Department, Shahrekord University, Shahrekord, Iran

    Hossein Ataei

  2. Faculty of Engineering, Shahrekord University, Shahrekord, Iran

    Yaghoub Tadi Beni

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  1. Hossein Ataei
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  2. Yaghoub Tadi Beni
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Correspondence to Yaghoub Tadi Beni.

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Ataei, H., Tadi Beni, Y. Size-Dependent Pull-In Instability of Electrically Actuated Functionally Graded Nano-Beams Under Intermolecular Forces. Iran J Sci Technol Trans Mech Eng 40, 289–301 (2016). https://doi.org/10.1007/s40997-016-0040-6

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  • DOI: https://doi.org/10.1007/s40997-016-0040-6

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