Analysis of particle damping with hollow steel particles

Takeshi Nogami, Shotaro Takahashi, Masato Saeki

Research output: Contribution to journalArticle

Abstract

The damping efficiency of a particle damper with hollow steel particles in a nonlinear vibrating system is investigated experimentally and analytically. The apparent of density of the hollow steel particle is almost the same as the plastics, but the melting point of the hollow steel particle higher than that of plastics. Therefore, it is expected that particle damping with hollow steel particles can perform at elevated temperatures where plastic particle damping cannot. The experimental study shows that significant damping can be achieved through used of hollow particle damping as well as plastic particle one. An analytical solution based on the discrete element method (DEM) is presented. DEM tracks the motion of granules based upon the direct numerical simulation integration of Newton's equations. Comparison between the experimental and analytical results shows that accurate estimates of the rms response of a primary system can be obtained. The height of granular materials and the clearance ratio were calculated by the gravity method. It is shown that the response of the primary system is independent of the area of the damper cavity in the case of that the mass ratio and the clearance ratio are the same.

Original languageEnglish
Pages (from-to)4058-4067
Number of pages10
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume77
Issue number783
Publication statusPublished - 2011 Dec 1

    Fingerprint

Keywords

  • Damper
  • Discrete element method
  • Granular materials
  • Gravity method
  • Hollow steel particles
  • Nonlinear vibration
  • Numerical analysis
  • Particle damping
  • Vibration control device

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this