›› 2009, Vol. 29 ›› Issue (5): 34-37.DOI: 10.3969/j.issn.1006-1355.2009.05.010

• 论文 • Previous Articles     Next Articles

《Nonlinear Dynamic Analysis of Fluid-Structure Coupled Vibration of Impeller System in Ventilating Fan》

GU Yong-xia1, ZhOU Zhong-ning2   

  1. (1. College of Mechanical and Engineering, Beijing Technology and Business University, Beijing 100037,China ; 2.College of Mechanical and Electronic Engineering, China University of Mining and Technology, Xuzhou Jiangsu 221008, China)
  • Received:2009-01-21 Revised:1900-01-01 Online:2009-10-18 Published:2009-10-18
  • Contact: GU Yong-xia

《基于非线性动力学的风机叶轮系统流固耦合振动研究》

谷勇霞1 ，周忠宁2   

  1. (1．北京工商大学机械工程学院，北京 100037；2．中国矿业大学机电学院，江苏 徐州 221008)
  • 通讯作者: 谷勇霞

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Abstract:

The features and laws of flow field and pressure pulsation within two counter-rotating rotors and tip vibration signals of blades under different conditions are analyzed. Some nonlinear dynamic analysis methods, such as phase-space reconstruction, correlation dimension, approximate entropy, and L-Z complexity, are mployed. The results demonstrate that the pressure pulsation and tip vibration are mutually related and coupled.

Key words: vibration and wave, nonlinear dynamics, fluid-structure coupling, phase-space reconstruction, correlation dimension, approximate entropy

摘要：

利用相空间重构、关联维、近似熵和L-Z复杂度等非线性动力学分析方法，定性和定量地分析了风机级间流场压力脉动与叶轮叶片振动信号随工况变化的特征和规律。研究结果表明：二者之间具有互体现性，存在耦合关系。

关键词: 振动与波, 非线性动力学, 流固耦合, 相空间重构, 关联维, 近似熵

CLC Number: