非线性转子-密封系统动力学模型研究

何洪军;荆建平

振动与冲击 ›› 2014, Vol. 33 ›› Issue (10) : 73-76.

PDF(1344 KB)
PDF(1344 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (10) : 73-76.
论文

非线性转子-密封系统动力学模型研究

  • 何洪军,荆建平
作者信息 +

Study of the dynamic model of the nonlinear rotor-seal system

  • HE Hong-jun,JING Jian-ping
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文章历史 +

摘要

针对线性化密封系统较难准确描述转子系统运动特点问题,基于双控体模型与转子运动方程提出新的非线性密封力模型研究转子运动特点。为研究密封力对转子系统影响,采用该非线性密封力模型通过绘制转子轨迹图、庞加莱图及分岔图分析转子密封系统运动特征,为进一步深入研究转子密封系统提供参考。

Abstract

The seal characteristic is a significant factor affecting the motion of the rotor system. The correct description for the gas excitation force is much important to study the rotor-seal system. Linear seal model is quite hard to accurately describe the motion characteristics of the rotor-seal system, so this paper proposes a new model of the nonlinear seal force based on the two-control-volume model and the motion equations of the rotor to investigate the rotor system. To study the influence of the seal force on rotor-seal system, this paper analyzes the rotor orbit, Poincare map and bifurcation diagram through adopting the new model. This paper gives a reference to further research the motion characteristics of the rotor-seal system.


关键词

密封力 / 转子 / 迷宫密封 / 双控制体

Key words

seal force / rotor / labyrinth seal / two-control-volume model

引用本文

导出引用
何洪军;荆建平. 非线性转子-密封系统动力学模型研究[J]. 振动与冲击, 2014, 33(10): 73-76
HE Hong-jun;JING Jian-ping. Study of the dynamic model of the nonlinear rotor-seal system[J]. Journal of Vibration and Shock, 2014, 33(10): 73-76

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