Efficiency of vibrational energy dissipation by tuned rolling-cylinder dampers

Ryota Tsuda, Masato Saeki

研究成果: Article

抄録

The damping efficiency of a tuned rolling-cylinder damper in a horizontally vibrating system under sinusoidal excitation was investigated experimentally and analytically. The damper is an auxiliary system and consists of some rotary bodies placed on a circular arc surface attached to the primary system. The friction force between rotary bodies is a source of energy dissipation of the auxiliary system. In an experimental approach, the effects of the size of rotary bodies, the number of rotary bodies with different radii used in combination and the amplitude of external excitation on the damping performance were investigated. In an analytical approach, an analytical model based on the discrete element method was constructed. The validity of the analytical model was confirmed by comparing experimental and analytical results. In addition, the effect of the radius of the circular arc surface on the damping performance was examined analytically.

元の言語English
記事番号114977
ジャーナルJournal of Sound and Vibration
463
DOI
出版物ステータスPublished - 2019 12 22

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dampers
Energy dissipation
Damping
energy dissipation
Analytical models
damping
arcs
Finite difference method
radii
Friction
excitation
friction

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

これを引用

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abstract = "The damping efficiency of a tuned rolling-cylinder damper in a horizontally vibrating system under sinusoidal excitation was investigated experimentally and analytically. The damper is an auxiliary system and consists of some rotary bodies placed on a circular arc surface attached to the primary system. The friction force between rotary bodies is a source of energy dissipation of the auxiliary system. In an experimental approach, the effects of the size of rotary bodies, the number of rotary bodies with different radii used in combination and the amplitude of external excitation on the damping performance were investigated. In an analytical approach, an analytical model based on the discrete element method was constructed. The validity of the analytical model was confirmed by comparing experimental and analytical results. In addition, the effect of the radius of the circular arc surface on the damping performance was examined analytically.",
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