The loss factor experimental characterisation of the non-obstructive particles damping approach

被引：39

作者：

Ben Romdhane, M. ^{[1
]}

Bouhaddi, N. ^{[2
]}

Trigui, M. ^{[1
]}

Foltete, E. ^{[2
]}

Haddar, M. ^{[1
]}

机构：

[1] Natl Sch Engineers Sfax, Mech Modelling & Mfg Res Unit, Sfax 3038, Tunisia

[2] FEMTO ST Inst, UMR 6174, Dept Appl Mech, F-25000 Besancon, France

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2013年 / 38卷 / 02期

关键词：

Granular material; Passive damping; Energy dissipation; Friction; Loss factor; VIBRATION; DAMPERS;

D O I：

10.1016/j.ymssp.2013.02.006

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The Non-obstructive Particle Damping (NOPD) technology is an actuality research topic in vibration attenuation. In spite of the simplicity of this technology, the large number of NOPD parameters constitutes one of the problems in the computation of its damping contribution. In this paper, an experimental characterisation of non-obstructive particle damper under harmonic excitation was investigated. The experimental method which was developed allows the quantification of NOPD's loss factor independently of the structure. Some system parameters such as excitation frequencies, excitation amplitudes and geometry of granular cavity were examined. Afterward, the characterised damping was converted to an equivalent viscous damping in order to predict the dynamic behaviour of a damped structure. The good correlation between experimental and numerical results illustrates the performance and the usefulness of the proposed method. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：585 / 600

页数：16

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