NONLIEAR DYNAMIC BEHAVIORS ANALYSIS OF COMPLEX ROTOR-BEARING SYSTEM

LIN LuSheng; LIU GuiPing; CHEN Yuan

doi:10.16579/j.issn.1001.9669.2015.03.001

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NONLIEAR DYNAMIC BEHAVIORS ANALYSIS OF COMPLEX ROTOR-BEARING SYSTEM

更新时间：2022-09-22

- NONLIEAR DYNAMIC BEHAVIORS ANALYSIS OF COMPLEX ROTOR-BEARING SYSTEM
- Journal of Mechanical Strength Vol. 37, Issue 3, Pages: 381-386(2015)
- 作者机构：
  
  1. 湖南大学国家高效磨削工程技术研究中心
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2015.03.001
  CLC：
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LIN LuSheng, LIU GuiPing, CHEN Yuan. NONLIEAR DYNAMIC BEHAVIORS ANALYSIS OF COMPLEX ROTOR-BEARING SYSTEM. [J]. 37(3):381-386(2015)
DOI：

LIN LuSheng, LIU GuiPing, CHEN Yuan. NONLIEAR DYNAMIC BEHAVIORS ANALYSIS OF COMPLEX ROTOR-BEARING SYSTEM. [J]. 37(3):381-386(2015) DOI： 10.16579/j.issn.1001.9669.2015.03.001.

摘要

针对现有方法在求解复杂转子-轴承系统非线性动力学特性时的不足,提出了基于动网格技术的计算流体力学和转子动力学相结合的流固耦合计算方法。首先建立滑动轴承轴心轨迹的运动方程,然后采用动网格技术对滑动轴承流场进行非线性瞬态计算,得到动态载荷作用下转子-轴承系统的轴心轨迹。最后,通过对某复杂转子-轴承系统非线性动力学特性的分析对本文方法进行了验证。结果表明,方法能够准确分析复杂转子-轴承系统非线性动力学特性并可求得其轴心轨迹。

Abstract

Aiming at overcoming the deficiency of available methods for revaling the nonlinear dynamic behaviors of complex rotor-bearing system,a fluid-structure method which combined rotor dynamics with computational fluid dynamics based on dynamic mesh is proposed. This method presented in this paper first developed a rotor-bearing system,then calculated the transient oil field of journal bearing by using a dynamic mesh method for variable flow,thus calculated the shaft center trajectory for a dynamically loaded journal bearing. Finally,this method is validated with nonlinear dynamics analysis of a complex rotorbearing system. The results show that the proposed method can accurately solving the nonlinear dynamics of complex rotor-bearing system.

关键词

非线性动力学转子-轴承系统流固耦合动网格

Keywords

Nonlinear dynamicsRotor-bearing systemFluid-structure interactionDynamic mesh

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Key Laboratory of Advanced Manufacturing and Test Technology for Automobile Parts,Ministry of Education,Chongqing University of Technology

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Department of Mechanical,Henan University of Engineering

Zhengzhou Research Institute of Mechanical Engineering,Co.,Ltd.

School of Mechanical and Precision Instrument Engineering ＆ Key Lab.of Manufacturing Equipment of Shaanxi Province ＆ Key Lab.of NC Machine Tools and Integrated Manufacturing Equipment of the Ministry of Education,Xi’ an University of Technology

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