Purpose

This work aims to demonstrate the vibration suppression of the rotor system with localized defects on bearing using an integral squeeze film damper (ISFD).

Design/methodology/approach

Experiments were carried out to study the vibration characteristics of the rotor system with ISFD mounted on fault deep groove ball bearings. Three fault bearings including bearing with outer race defect, inner race defect and ball defect have been used in this paper. The results were compared by use of vibration acceleration level, continuous wavelet transform and envelope spectrum.

Findings

It was found that ISFD shows excellent damping and vibration attenuation characteristics of the rotor system with defective bearing. The fault bearing rotor system with external ISFD considerably reduces the vibration energy and amplitude compared with the system without ISFD.

Originality/value

There is a dearth of experimental research pertaining to vibration characteristics of rotor system support by defective bearings with ISFD. Besides, the test provides evidence for the application of ISFD in vibration control of the rotor system with incipient defects on bearing.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2020-0144/

中文翻译：

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带局部缺陷的深沟球轴承振动时整体挤压膜阻尼器的阻尼特性

目的

这项工作旨在证明使用整体式压膜阻尼器（ISFD）可以抑制轴承局部缺陷的转子系统的振动。

设计/方法/方法

进行了试验，以研究将ISFD安装在故障深沟球轴承上的转子系统的振动特性。本文使用了三种故障轴承，包括外圈缺陷，内圈缺陷和滚珠缺陷。使用振动加速度水平，连续小波变换和包络谱对结果进行了比较。

发现

已经发现，ISFD在轴承缺陷的转子系统中表现出出色的阻尼和减振特性。与没有ISFD的系统相比，带有外部ISFD的故障轴承转子系统大大降低了振动能量和振幅。

创意/价值

缺少有关带有ISFD的缺陷轴承的转子系统支撑的振动特性的实验研究。此外，该试验为ISFD在转子系统的振动控制中的应用提供了证据，该系统在轴承上出现早期缺陷。

同行评审

本文的同行评审历史记录可在以下网址获得：https://publons.com/publon/10.1108/ILT-04-2020-0144/