We investigate the effects of contact in MEMS oscillators by fabricating, testing, and simulating a simple device featuring bilinear stiffness. When the shuttle oscillation exceeds a given threshold, contact with an elastic beam is activated. We first discuss the standard one-cycle response that displays a strongly hardening hysteresis loop. Then, we show that other periodic solutions exist, characterized by multiple cycles and impacts. These are stable only for limited ranges of forcing amplitudes and frequencies and are associated to period doubling bifurcations. The spectrum of the measured and simulated displacements shows an increasingly rich collection of tones similar to what is known as frequency combs in optics. [2018-0175]

An investigation on the effects of contact in MEMS oscillators

Guerrieri, Andrea;Frangi, Attilio;
2018-01-01

Abstract

We investigate the effects of contact in MEMS oscillators by fabricating, testing, and simulating a simple device featuring bilinear stiffness. When the shuttle oscillation exceeds a given threshold, contact with an elastic beam is activated. We first discuss the standard one-cycle response that displays a strongly hardening hysteresis loop. Then, we show that other periodic solutions exist, characterized by multiple cycles and impacts. These are stable only for limited ranges of forcing amplitudes and frequencies and are associated to period doubling bifurcations. The spectrum of the measured and simulated displacements shows an increasingly rich collection of tones similar to what is known as frequency combs in optics. [2018-0175]
2018
bilinear oscillator; Contact; frequency combs; non-linear dynamics; piecewise linear oscillator; Mechanical Engineering; Electrical and Electronic Engineering
File in questo prodotto:
File Dimensione Formato  
jmems18 contact submitted.pdf

Accesso riservato

: Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
Dimensione 4.81 MB
Formato Adobe PDF
4.81 MB Adobe PDF   Visualizza/Apri

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: https://hdl.handle.net/11311/1083606
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 15
  • ???jsp.display-item.citation.isi??? 13
social impact