Experimental observation of nonlinear vibrations in a rub-impact rotor system
Experimental observation of nonlinear vibrations in a rub-impact rotor system
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DOI：
10.1016/j.jsv.2004.05.012
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发表时间：
2005-05-20
影响因子：
4.7
通讯作者：
Lu, WX
中科院分区：
文献类型：
--
作者：
Chu, FL;Lu, WX
安装了一个实验装置来模拟转子系统的转子-定子摩擦。设计了一种特殊的定子结构，可以模拟全碰摩的情况。利用振动波形、频谱、轨道和庞加莱映射分析了碰摩时系统的非线性响应和分岔特性。进行了单盘和多盘单转子和双转子的实验。观察到非常丰富的周期性和混沌振动形式。实验表明，系统运动一般包含2 X、3 X等多谐分量和1/2 X、3/2 X等1/2分数谐分量，在某些特殊条件下，还可以观测到1/3 X、2/3 X等1/3分数谐分量。(c)2004爱思唯尔有限公司保留所有权利。
An experimental setup is installed to simulate the rotor-to-stator rub of the rotor system. A special structure of stator is designed that can simulate the condition of the full rub. The vibration waveforms, spectra, orbits and Poincare's maps are used to analyze nonlinear responses and bifurcation characteristics of the system when the rub-impact occurs. Experiments with different conditions, including one and two rotor with single- and multi-disks, are performed. Very rich forms of periodic and chaotic vibrations were observed. The experiments show that the system motion generally contains the multiple harmonic components such as 2X, 3X, etc. and the 1/2 fractional harmonic components such as 1/2X, 3/2X, etc. Under some special conditions, the 1/3 fractional harmonic components such as 1/3X, 2/3X, etc. can be observed as well. (c) 2004 Elsevier Ltd. All rights reserved.