Dynamic Behaviors Analysis of Reduced Rotor Models with Looseness Based on the TPOD Method |
| |
Authors: | Kuan Lu Yushu Chen |
| |
Abstract: | The transient proper orthogonal decomposition(TPOD) method is used to study dynamic behaviors of the reduced rotor-bearing models,and the fault-free model is compared with the models with looseness fault.A 22 degree of freedoms(DOFs) rotor model supported by bearings is established.Both one end and two ends pedestal looseness of the liquid-film bearings are studied by analyzing the time history and the frequency-spectrum curves.The effects of the initial displacement and velocity values to frequency components of the original systems and the dimension reduction efficiency are discussed.Moreover,the effects of variation of initial conditions on the efficiency of the TPOD method are studied.Reduced models can provide guidance significance from the perspectives of the theory and numerical simplification to discuss the characteristics of pedestal looseness fault. |
| |
Keywords: | dimension reduction TPOD method rotor-bearing Pedestal looseness high-dimensional initial values |
本文献已被 CNKI 等数据库收录! |
| 点击此处可从《哈尔滨工业大学学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《哈尔滨工业大学学报(英文版)》下载全文 |