| LIU Hongmei (刘洪美)*,LI Shengguo**,SUN Chao**,SUN Yanan**,ZHAO Jianhua***.[J].高技术通讯(英文),2024,30(2):146~157 |
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| Research of transient rotor dynamic characteristic of magnetic liquid double suspension bearing in double collision state |
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| DOI：10. 3772 / j. issn. 1006-6748. 2024. 02. 005 |
| 中文关键词: |
| 英文关键词: displacement response, axis trajectory, radial excitation peak, radial excitation times, transient dynamic characteristics |
| 基金项目: |
| Author Name | Affiliation | | LIU Hongmei (刘洪美)* | ( * Shijiazhuang Rail Transit Group Co. Ltd, Shijiazhuang 050011, P. R. China)
( ** Shijiazhuang Haishan Industrial Development Co. Ltd, Shijiazhuang 050200, P. R. China)
( *** Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan University,
Qinhuangdao 066004, P. R. China) | | LI Shengguo** | | | SUN Chao** | | | SUN Yanan** | | | ZHAO Jianhua*** | |
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| 中文摘要: |
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| 英文摘要: |
| During the operation of magnetic liquid double suspension bearing (MLDSB), due to rotor resonance,
assembly error and other factor, the vibration amplitude of the rotor in resonance state exceeds
the original design clearance, resulting in the collision damage between the rotor and the stator,
the rotor and the casing. This paper presents a method to simulate the influence of different factors
on the dynamic characteristics of 5 degrees of freedom (DOF) rotor based on the dynamic model
of MLDSB. Firstly, according to the second Lagrange equation, the dynamic equation of 5 DOF rotor
is derived, and the mathematical model is established. Then, based on 5 DOF rotor dynamic
equation, the rotor transient dynamic equation under collision state is obtained, and the rotor transient
collision dynamic simulation model is established. Finally, the key influencing factors of rotor
dynamic characteristics are extracted, and the influence mapping relationship of rotor displacement,
axis locus and stress distribution under different factors is simulated by using ANSYS Workbench
software. The experimental results show that this method can effectively reflect the influence of various
factors on the dynamic characteristics of the rotor. This method can provide theoretical reference
for the design and control of MLDSB. |
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