Dynamic response analysis of a double-disc rotor system with rolling bearings based on POD method

被引：7

作者：

Lu, Kuan ^{[1
]}

Guo, Dong ^{[1
]}

Cheng, Hui ^{[1
]}

Zhang, Wei ^{[2
]}

Zhang, Haopeng ^{[1
]}

Fu, Chao ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Xian 710072, Peoples R China

[2] Beijing Univ Technol, Coll Mech Engn, Beijing 100124, Peoples R China

来源：

INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS | 2024年 / 158卷

基金：

中国国家自然科学基金;

关键词：

Nonlinear vibration; Order reduction; High-dimensional dynamic system; POD method; Rotor dynamics; PROPER ORTHOGONAL DECOMPOSITION; ORDER REDUCTION; MODEL-REDUCTION;

D O I：

10.1016/j.ijnonlinmec.2023.104569

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this paper, a double-disc rotor system with two support rolling bearings is reduced by the proper orthogonal decomposition (POD) method. The finite element method (FEM) is used to establish the rotor system model (96DOFs). The basic theory of the POD method and the concrete expression in the rotor system is introduced. The rotor system is reduced to 12, 5, and 2 DOFs by the POD method, respectively. The time history curves, and frequency spectrums of the reduced and original systems are compared for verifying the accuracy of the POD method. The 2-DOFs reduced system is solved by the Harmonic balance and alternating frequency/time domain (HB-AFT), whose results are in good agreement with those by the Runge-Kutta method.

引用

页数：9

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