Electrothermally tunable bridge resonator

Amal Z. Hajjaj, Abdallah Ramini, Nouha Alcheikh, Md Abdullah Al Hafiz, Mohammad I. Younis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper demonstrates experimentally, theoretically, and numerically a wide-range tunability of an in-plane clampedclamped microbeam, bridge, and resonator compressed by a force due to electrothermal actuation. We demonstrate that a single resonator can be operated at a wide range of frequencies. The microbeam is actuated electrothermally, by passing a DC current through it. We show that when increasing the electrothermal voltage, the compressive stress inside the microbeam increases, which leads eventually to its buckling. Before buckling, the fundamental frequency decreases until it drops to very low values, almost to zero. After buckling, the fundamental frequency increases, which is shown to be as high as twice the original resonance frequency. Analytical results based on the Galerkin discretization of the Euler Bernoulli beam theory are generated and compared to the experimental data and to simulation results of a multi-physics finite-element model. A good agreement is found among all the results.

Original languageEnglish (US)
Title of host publication21st Design for Manufacturing and the Life Cycle Conference; 10th International Conference on Micro- and Nanosystems
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791850145
DOIs
StatePublished - Jan 1 2016
EventASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2016 - Charlotte, United States
Duration: Aug 21 2016Aug 24 2016

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
Volume4

Other

OtherASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2016
CountryUnited States
CityCharlotte
Period8/21/168/24/16

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Modeling and Simulation

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