Investigations of the Effects of Geometric Imperfections on the Nonlinear Static and Dynamic Behavior of Capacitive Micomachined Ultrasonic Transducers

Autor: Aymen Jallouli, Najib Kacem, Joseph Lardies

Publikováno v: Micromachines, Vol 9, Iss 11, p 575 (2018)

In order to investigate the effects of geometric imperfections on the static and dynamic behavior of capacitive micomachined ultrasonic transducers (CMUTs), the governing equations of motion of a circular microplate with initial defection have been d

Externí odkaz: https://doaj.org/article/79503a09613840ef970587731820615f

Experimental characterization of nonlinear static and dynamic behaviors of circular capacitive microplates with initial deflection

Autor: Patrice Le Moal, Gilles Bourbon, Najib Kacem, Joseph Lardies, Aymen Jallouli

Publikováno v: Nonlinear Dynamics
Nonlinear Dynamics, 2021, 103 (3), pp.2329-2343

International audience; In this paper, the effects of initial deflection on the static and dynamic behaviors of circular capacitive transducers are experimentally investigated. The obtained results are in good agreement with numerical simulations. It

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6912c0d42928ec05ac0b223dcbdebcea
https://hal.archives-ouvertes.fr/hal-03414230

Effects of Squeeze Film and Initial Deflection on the Resonance Frequencies and Modal Damping of Circular Microplates

Autor: Fehmi Najar, Najib Kacem, Joseph Lardies, Aymen Jallouli

Publikováno v: International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Aug 2018, Quebec, Canada

International audience; We investigate the effects of squeeze air film and initial deflection on the resonance frequencies and modal damping of capacitivecircular microplates. The equation of motion of a circular microplate, which are derived from th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eab4ee92aa61d66fb3cc8f4d693947ff
https://doi.org/10.1115/detc2018-85993

Nonlinear Static and Dynamic Behavior of an Imperfect Circular Microplate Under Electrostatic Actuation

Autor: Aymen Jallouli, Joseph Lardies, Najib Kacem

Publikováno v: Volume 4: 22nd Design for Manufacturing and the Life Cycle Conference; 11th International Conference on Micro- and Nanosystems.

In this article, we investigate the nonlinear static and dynamic behavior of a clamped circular microplate in presence of imperfections. By taking in account the von Karman nonlinearity, the geometrical imperfections lead to a significant delay in st

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::db772064d630869915115523f10ce867
https://doi.org/10.1115/detc2017-67996

A computational model for large-amplitude nonlinear vibration of circular CMUTs under primary resonance

Autor: Aymen Jallouli, Gilles Bourbon, Najib Kacem, Patrice Lemoal, Joseph Lardies

Publikováno v: International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, May 2015, Crete Island, Greece
Scopus-Elsevier
HAL

International audience; A computational multiphysics model for an electrically actuated clamped circular plate is developed. The Galerkin approach is used in order to transform the continuous model into a system having finite degrees of freedom. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8811170bad9151f8694ba76e8b169b0
https://hal.archives-ouvertes.fr/hal-02131354