Dynamic characteristics of electrostatically actuated microbeams with slant crack
type: Item
instance of: scholarly article
title: Dynamic characteristics of electrostatically actuated microbeams with slant crack
zbMATH Open document ID: 1394.74161
DOI: 10.1155/2015/208065
author: Han Zhou
author: W. M. Zhang
author: Z. K. Peng
author: Guang Meng
published in: Mathematical Problems in Engineering
publication date: 2018-08-27T00:00:00Z
review text: Summary: An improved model of the slant crack on a microbeam is presented. Based on fracture mechanics, the rotation coefficient for the slant crack is derived as a massless rotational spring accounting for the additional stress intensity factors generated by the orientation of the crack compared to the transverse crack. Comparisons between microbeams with a slant crack of different geometry parameters (slant angle, depth ratio, and crack position) are investigated with regard to the dynamic mechanical behaviors and nonlinear response. By presenting a mathematical modeling, the effects of the slant crack and the electric actuation of an electrostatically actuated fixed-fixed microbeam on the dynamic characteristics are examined in detail. It is shown that the crack position has more significant influence on the pull-in voltage value than the slant angle or the depth ratio. Approaching the slant crack to the fixed end or enlarging the external incentives amplifies the nonlinearity of the microbeam system, while the effects of depth ratio and slant angle are dependent on the crack position. The resonance frequency and the resonance amplitude are affected as well.
Mathematics Subject Classification ID: 74R10
zbMATH DE Number: 6925771
Wikidata QID: Q59117615
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2015/208065
OpenAlex ID: W1670340640
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description: scientific article; zbMATH DE number 6925771