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Published in: Archive of Applied Mechanics 3/2024

08-02-2024 | Original

A size-dependent axisymmetric plate element: application to MEMS

Authors: Masoud Rahaeifard, Ali Karimzadeh

Published in: Archive of Applied Mechanics | Issue 3/2024

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Abstract

This paper presents the formulation of a novel axisymmetric plate element capable of capturing size effects observed in micro-scaled structures. To establish the element formulation, a size-dependent beam element is considered, and by axisymmetric expansion of the model, the stiffness and mass matrices and force vector for an axisymmetric plate element are derived. Comparing the results of this model with those from literature and the outcomes of COMSOL confirms that the present FE formulation can accurately predict the static and dynamic behavior of microplates as well as macro-scale plates. Furthermore, a convergence analysis is performed which indicates that this model can accurately predict the static deflection and natural frequency of circular plates utilizing very low number of elements and consequently with low values of computation cost. As an example of real-world application, the model is applied to analysis of microelectromechanical devices and its accuracy is confirmed.

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Metadata
Title
A size-dependent axisymmetric plate element: application to MEMS
Authors
Masoud Rahaeifard
Ali Karimzadeh
Publication date
08-02-2024
Publisher
Springer Berlin Heidelberg
Published in
Archive of Applied Mechanics / Issue 3/2024
Print ISSN: 0939-1533
Electronic ISSN: 1432-0681
DOI
https://doi.org/10.1007/s00419-024-02544-2

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