Circular micromembranes, subject to in-plane tension and transverse pressure and, actuated by a piezoelectric film, are modeled via a geometrically exact approach that accounts for finite motions. The free vibration properties (i.e., frequencies and mode shapes) about the nonlinear equilibrium due to the in-plane prestress state and the pressure field are investigated in a wide range of pressures to purposefully explore the nonlinear range. Given the pronounced hardening membrane nonlinearity, there is a high sensitivity of the fundamental frequency with respect to the applied pressure. This is due to the nonlinear increase of the membrane tension caused by the pressure. Analytical laws can be obtained by curve fitting to describe the variation of the membrane lowest frequencies with the prestress tension and the applied pressure. Such laws are useful in feasibility studies on the design of micromembranes as pressure sensors.

Free vibration of micromembranes subject to prestress and pressure / Arena, Andrea; Lacarbonara, Walter. - STAMPA. - (2015). ((Intervento presentato al convegno 9th International Conference on Micro- and Nanosystems. Boston, Massachusetts, USA. August 2–5, 2015 tenutosi a Boston, MA, USA nel August 2-5 [doi.org/10.1115/DETC2015-46365].

Free vibration of micromembranes subject to prestress and pressure

ARENA, ANDREA
;
LACARBONARA, Walter
2015

Abstract

Circular micromembranes, subject to in-plane tension and transverse pressure and, actuated by a piezoelectric film, are modeled via a geometrically exact approach that accounts for finite motions. The free vibration properties (i.e., frequencies and mode shapes) about the nonlinear equilibrium due to the in-plane prestress state and the pressure field are investigated in a wide range of pressures to purposefully explore the nonlinear range. Given the pronounced hardening membrane nonlinearity, there is a high sensitivity of the fundamental frequency with respect to the applied pressure. This is due to the nonlinear increase of the membrane tension caused by the pressure. Analytical laws can be obtained by curve fitting to describe the variation of the membrane lowest frequencies with the prestress tension and the applied pressure. Such laws are useful in feasibility studies on the design of micromembranes as pressure sensors.
978-0-7918-5711-3
File allegati a questo prodotto
File Dimensione Formato  
Arena_FreeVibration_2015.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 732.58 kB
Formato Adobe PDF
732.58 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11573/781934
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 0
social impact