Parametric Selection of Dynamic Vibration Absorbers for Resonant Suppression of Structure-Absorber Systems

Abstract:

The selection of absorber parameters is of utmost significance for structural vibration control by dynamic vibration absorbers. Based on the classical frequency tuning approach by Den Hartog, optimal damping ratio is derived in close form by equating the dynamic magnification factors of the structural motion at three particular frequencies of interest. In addition, by maximizing the two identical modal damping ratios through root locus in the first quadrant of complex plane, the corresponding absorber damping ratio is derived and proposed as the upper bound of the absorber damping ratio for practical applications.

• Periodical: Applied Mechanics and Materials (Volume 723)
• Pages: 31-35
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.723.31
• Online since: January 2015
• Authors: Lin Liu*, Huang Cheng Fang
• Keywords: Damping Ratio, Dynamic Vibration Absorber, Modal Damping, Optimum Parameter, Tuning

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