Vol. 1, No. 5, 2006

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ISSN: 1559-3959
Analysis of electromechanical buckling of a prestressed microbeam that is bonded to an elastic foundation

David Elata and Samy Abu-Salih

Vol. 1 (2006), No. 5, 911–923
Abstract

The electromechanical buckling of a prestressed microbeam bonded to a dielectric elastic foundation is analyzed. It is shown that electrostatic forces can precipitately instigate buckling even when the prestress in the microbeam is lower than the critical value that would cause mechanical buckling. We show that electrostatic potential can be used to achieve on/off switching of surface flexures. An analytic solution of the critical electromechanical state is derived. In addition, an analytic approximation of the initial postbuckling state is also presented, and is validated numerically.

Keywords
electromechanical buckling, electromechanical instability
Milestones
Received: 2 February 2006
Accepted: 17 April 2006
Published: 1 September 2006
Authors
David Elata
Faculty of Mechanical Engineering
Technion —Israel Institute of Technology
Haifa 32000
Israel
Samy Abu-Salih
Faculty of Mechanical Engineering
Technion —Israel Institute of Technology
Haifa 32000
Israel