Mathematical Problems in Engineering
Volume 2010 (2010), Article ID 726843, 12 pages
Research Article

The Effects of Structure Defects on the Performance of a Micro Comb Resonator

State Key Laboratory of Tribology, Department of Precision Instrument, Tsinghua University, Beijing 100084, China

Received 26 November 2009; Revised 12 April 2010; Accepted 1 May 2010

Academic Editor: Irina N. Trendafilova

Copyright © 2010 D. Guo and Y. Zhu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A micro comb resonator loaded by alternating electric field is modeled by finite element method, The damping is analyzed by both Couette flow model and Stokes flow model. Structure faults are researched its effects on the dynamic characteristics of the micro comb resonator. The result shows that adhesion fault makes the resonance frequency higher and sensitivity reduction, while crack fault debases the resonance frequency and amplitude. When the crack is located near the end, the stress concentration at the crack location is highest, which is easy to induce the support beam broken.