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Numerical Study of Forced Vibration Suppression by Parametric Anti-Resonance

Result description

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 extimation of its effect we come both from a characteristic exponent of the analytical solution and numerial 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.

Keywords

active dampingparametric anti-resonanceexternal harmonic excitation

The result's identifiers

Alternative languages

  • Result language

    angličtina

  • Original language name

    Numerical Study of Forced Vibration Suppression by Parametric Anti-Resonance

  • Original language description

    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 extimation of its effect we come both from a characteristic exponent of the analytical solution and numerial 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.

  • Czech name

  • Czech description

Classification

  • Type

    Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BI - Acoustics and oscillation

  • OECD FORD branch

Result continuities

Others

  • Publication year

    2016

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Archives of Acoustics

  • ISSN

    0137-5075

  • e-ISSN

  • Volume of the periodical

    41

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    PL - POLAND

  • Number of pages

    7

  • Pages from-to

    527-533

  • UT code for WoS article

    000383219300012

  • EID of the result in the Scopus database

    2-s2.0-84997050516

Result type

Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

Jx

CEP

BI - Acoustics and oscillation

Year of implementation

2016