Numerical Study of Forced Vibration Suppression by Parametric Anti-Resonance

• Autorzy: Pešek L. , Šulc P. , Půst L.

Identyfikatory

DOI

10.1515/aoa-2016-0051

• Języki publikacji: EN

Abstrakty

EN

The parametric anti-resonance phenomenon as an active damping tool for suppression of externally excited resonant vibration is numerically studied herein. It is well known fact that the anti-resonance phenomenon, i.e. the stiffness periodic variation by subtractive, combination resonance frequency, brings stabilization and cancelling into self-excited vibrations. But this paper aims at a new possibility of its application, namely a damping of externally excited resonant vibration. For estimation of its effect we come both from a characteristic exponent of the analytical solution and numerical solution of forced vibration of 2DOF linear system with additional parametric excitation. The amplitude suppression owing to the parametric anti-resonance is studied on several parameters of the system: a depth of parametric excitation, mass ratio, damping coefficient and small frequency deviations from the parametric anti-resonance.

Słowa kluczowe

EN

active damping; parametric anti-resonance; external harmonic excitation

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2016
• Tom: Vol. 41, No. 3
• Strony: 527--533
• Opis fizyczny: Bibliogr. 31 poz., wykr.

Twórcy

autor

Pešek L.

• Institute of Thermomechanics AS CR, v.v.i. Dolejškova 5, 182 00 Prague 8, Czech Republic

autor

Šulc P.

• Institute of Thermomechanics AS CR, v.v.i. Dolejškova 5, 182 00 Prague 8, Czech Republic

autor

Půst L.

• Institute of Thermomechanics AS CR, v.v.i. Dolejškova 5, 182 00 Prague 8, Czech Republic

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.