MATEC Web of Conferences
Volume 16, 2014CSNDD 2014 - International Conference on Structural Nonlinear Dynamics and Diagnosis
|Number of page(s)||4|
|Section||Deterministic and stochastic dynamics and control of nonlinear systems|
|Published online||01 September 2014|
Fluid damping phenomena in a slender microbeam modelled on nonclassical theory
DICEA, Polytechnic University of Marche, 60131 Ancona, Italy
a e-mail: firstname.lastname@example.org
This work deals with the evaluation of the squeeze-film damping in an electrically-actuated microbeam considering the eﬀects of an imposed static deﬂection. The model presents a reliable modelling of the mechanical behaviour by improving the classical approach with the features of the strain-gradient elasticity theory. Taking into account a correction of the electric actuation for the fringing field effects, a parametric analysis is performed. The work pays attention to evaluate the damping force on the beam surface both in small static deﬂection regime and near the static pull-in. The results show that the correction for the finiteness of beam edges and the high-order material parameters aﬀect the response only at large deﬂections. A brief study on the static behaviour is carried out highlighting how the response is affected by the strain-gradient elasticity theory. A parametric analysis of the damping force is presented and the properties of the cut-off point are studied.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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