期刊
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
卷 24, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0960-1317/24/5/055004
关键词
resonance frequency; Euler-Bernoulli equation; perforated beams; MEMS
类别
资金
- Italian Ministry of Education, University and Research (MIUR) [2008SXRHWL]
In this paper, we develop closed expressions for the equivalent bending and shear stiffness of beams with regular square perforations, and apply them to the problem of determining the resonance frequencies of slender, regularly perforated clamped-clamped beams, which are of interest in the development of MEMS resonant devices. We prove that, depending on the perforation size, the Euler-Bernoulli equation or the more complex shear equation needs to be used to obtain accurate values for these frequencies. Extensive finite element method simulations are used to validate the proposed model over the full practical range of possible hole sizes. An experimental verification of the model is also presented.
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