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A Simple Bimodular Nonlinear Element
Lomonosov Moscow State University, RUS.
Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
2018 (engelsk)Inngår i: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 64, nr 3, s. 293-298Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We have studied the dynamics of an artificial nonlinear element representing a flexible membrane with oscillation limiters and a static pressing force. Such an element has the property of “bimodularity” and demonstrates “modular” nonlinearity. We have constructed a mathematical model that describes these oscillations. Their shapes have been calculated. We follow the analogy with a classical object—Galileo’s pendulum. We demonstrate that for a low-frequency excitation of the membrane, the level of the harmonics in the spectrum is higher than in the vicinity of the resonance frequency. We have established a strong dependence of the level of the harmonics on the magnitude of the pressing force for a weak perturbation. We propose a design scheme for a device in the quasi-static approximation possessing the property of bimodularity. We perform an experiment that confirms its operability. We show a qualitative coincidence of the experimental results and calculations when detecting an amplitude-modulated signal. © 2018, Pleiades Publishing, Ltd.

sted, utgiver, år, opplag, sider
Pleiades Publishing , 2018. Vol. 64, nr 3, s. 293-298
Emneord [en]
artificial nonlinear element, detection of acoustic oscillations, generation of harmonics, modular nonlinearity, Acoustics, Physics, Acoustic oscillation, Amplitude modulated signals, Nonlinear elements, Quasistatic approximations, Resonance frequencies, Strong dependences, Harmonic analysis
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Identifikatorer
URN: urn:nbn:se:bth-16633DOI: 10.1134/S1063771018020112ISI: 000434472200005Scopus ID: 2-s2.0-85048219221OAI: oai:DiVA.org:bth-16633DiVA, id: diva2:1227961
Tilgjengelig fra: 2018-06-27 Laget: 2018-06-27 Sist oppdatert: 2018-06-29bibliografisk kontrollert

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