RESEARCH ON BENDING⁃TORSION COUPLING VIBRATION CHARACTERISTIC OF COMPRESSOR SHAFT SYSTEM CONSIDERING HARD STIFFNESS CHARACTERISTIC

ZHANG Hao; ZHAO Xiang; ZHANG DongMei; ZUO Song

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RESEARCH ON BENDING⁃TORSION COUPLING VIBRATION CHARACTERISTIC OF COMPRESSOR SHAFT SYSTEM CONSIDERING HARD STIFFNESS CHARACTERISTIC

更新时间：2024-10-10

- RESEARCH ON BENDING⁃TORSION COUPLING VIBRATION CHARACTERISTIC OF COMPRESSOR SHAFT SYSTEM CONSIDERING HARD STIFFNESS CHARACTERISTIC
- Journal of Mechanical Strength Pages: 1-12(2024)
- 作者机构：
  
  陆军勤务学院，重庆 401331
- 作者简介：
  
  ZHAO Xiang， E⁃mail： 544623422@qq.com
- 基金信息：
- DOI：
  CLC： TH457
- Published Online：10 October 2024，
- 稿件说明：
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张皓,赵翔,张冬梅等.考虑硬刚度特性的压缩机轴系弯扭耦合振动特性研究[J].机械强度,

ZHANG Hao,ZHAO Xiang,ZHANG DongMei,et al.RESEARCH ON BENDING⁃TORSION COUPLING VIBRATION CHARACTERISTIC OF COMPRESSOR SHAFT SYSTEM CONSIDERING HARD STIFFNESS CHARACTERISTIC[J].Journal of Mechanical Strength,
张皓,赵翔,张冬梅等.考虑硬刚度特性的压缩机轴系弯扭耦合振动特性研究[J].机械强度, DOI：10.16579/j.issn.1001-9669...001.

ZHANG Hao,ZHAO Xiang,ZHANG DongMei,et al.RESEARCH ON BENDING⁃TORSION COUPLING VIBRATION CHARACTERISTIC OF COMPRESSOR SHAFT SYSTEM CONSIDERING HARD STIFFNESS CHARACTERISTIC[J].Journal of Mechanical Strength, DOI：10.16579/j.issn.1001-9669...001.

摘要

为探究联轴器变刚度特征对轴系振动行为的影响规律，以压缩机电动机转子⁃联轴器⁃曲轴⁃轴承为研究对象，利用Lagrange法构建了轴系弯扭耦合动力学模型。结果表明，联轴器变刚度特性会造成相空间出现“锯齿形”波动情况，但轴心轨迹变化规律基本不受影响；以转速为控制参数时，变刚度特性会诱发混沌和分岔等非线性行为，并引起共振峰值右移和不稳定区域幅值增加现象；随着轴瓦间隙的减少，相空间波动程度降低，且

、

方向非碰摩区域面积呈下降趋势。研究成果可以更好地预测轴系弯扭耦合振动行为与指导轴系工作转速的选择。

Abstract

In order to investigate the influence of the coupling variable stiffness characteristics on the vibration behavior of the shaft system， the motor rotor⁃coupling⁃crankshaft⁃bearing of the compressor was taken as the object of study， and the Lagrange method was used to construct a coupled dynamics model of the bending⁃torsion of the shaft system. The results show that the variable stiffness characteristics of the coupling will cause the phase space to appear as "sawtooth" fluctuations， but the law of variation of the shaft center trajectory was basically unaffected. With rotational speed as the control parameter， the variable stiffness characteristic induces nonlinear behaviors such as chaos and bifurcation and causes a rightward shift of the resonance peak and an increase in the amplitude of the unstable region. The degree of phase space fluctuation decreases with the reduction of the axial tile clearance， and the area of the non⁃contacting region in the

and

directions shows a decreasing trend. The research results can better predict the bending⁃torsion coupling vibration behavior of the shaft system and guide the selection o

f the operating speed of the shaft system.

关键词

压缩机轴系弯扭耦合硬刚度非线性动力学分岔

Keywords

Compressor shaft systemBending⁃torsion couplingHardening stiffnessNon⁃linear dynamicsBifurcation

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