Performance of friction dampersin geometric mistuned bladed disk assembly subjected to random excitations

被引：11
|
作者：
Cha, Douksoon [1 ]
机构：
[1] Korea Univ Technol & Educ, Dept Mech Design Engn, Chungjeol Ro 1600, Cheonan 31253, South Korea
来源：
JOURNAL OF SOUND AND VIBRATION | 2018年 / 426卷
关键词：
Bladed disk assembly; Geometric mistuning; Friction damper; Correlation of excitation; Optimal normal load; NONLINEAR MULTIHARMONIC VIBRATIONS; FORCED RESPONSE; WHITE-NOISE; STATISTICS;
D O I：
10.1016/j.jsv.2018.04.012
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
In this study, the performance of friction dampers of a geometric mistuned bladed disk assembly is examined under random excitations. The results are represented by non-dimensional variables. It is shown that the performance of the blade-to-blade damper can deteriorate when the correlated narrow band excitations have a dominant frequency near the 1st natural frequency of the bladed disk assembly. Based on a simple model of a geometric mistuned bladed disk assembly, the analytical technique shows an efficient way to design friction dampers. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：34 / 53
页数：20
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