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Microsystem Technologies

, Volume 14, Issue 2, pp 235–240 | Cite as

Mechanical behavior of a circular micro plate subjected to uniform hydrostatic and non-uniform electrostatic pressure

  • Adel Nabian
  • Ghader RezazadehEmail author
  • Mohammadali Haddad-derafshi
  • Ahmadali Tahmasebi
Technical Note

Abstract

Circular micro plates are used in the many Microelectromechanical devices as micropumps and micro pressure sensors. All such systems exhibit a static instability phenomenon (Divergence) which is known as the “pull-in” instability. In this paper a distributed model was used to investigate the pull-in instability of a circular micro plate subjected to non-uniform electrostatic pressure and uniform hydrostatic pressure. The non-linear governing equation was derived and in order to linearize the obtained governing equations, step by step linearization method was used, then the linear system of equation was solved by finite difference method. The obtained results for only electrostatic actuation were compared with the existing results and good agreement has been achieved. There are exist two method of actuation. The pull-in voltages for these two actuation mechanism were investigated and the obtained results exhibited different effects on each actuation mechanism.

Keywords

Hydrostatic Pressure Applied Voltage Actuation Mechanism Actuation Voltage Soap Film 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors are grateful for the critical and helpful comments of the anonymous referees.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Adel Nabian
    • 1
  • Ghader Rezazadeh
    • 1
    Email author
  • Mohammadali Haddad-derafshi
    • 1
  • Ahmadali Tahmasebi
    • 1
  1. 1.Mechanical Engineering DepartmentUrmia universityUrmiaIslamic Republic of Iran

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