Dynamic performance analysis of a gear transmission system due to cavitation in gerotor pump
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Published:2023-11-20
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Volume:
Page:
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ISSN:1461-3484
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Container-title:Journal of Low Frequency Noise, Vibration and Active Control
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language:en
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Short-container-title:Journal of Low Frequency Noise, Vibration and Active Control
Author:
Wang Zhiwei12,
Hu Zehua12ORCID,
Tian Zhaoyang12ORCID,
Chen Siyu12ORCID
Affiliation:
1. State Key Laboratory of Precision Manufacturing for Extreme Service Performance, Central South University, Changsha, China
2. College of Mechanical and Electrical Engineering, Central South University, Changsha, China
Abstract
In this work, a dynamic model considering time-varying mesh stiffness and backlash was proposed and a test rig was built to investigate the vibration behavior of the idle gear set in a gerotor pump. The effects of input shaft speed, torque fluctuation, and gear tooth backlash on the dynamic performance of gerotor pump were analyzed according to the numerical and experimental results. Results demonstrate that when the torque fluctuation is neglected, the dynamic transmission error of drive gear is dominated by the first three mesh harmonic components; however, the RMS values of vibration acceleration have high frequency characteristics. When the torque fluctuation is considered, the dynamic responses of gerotor pump are modulated by the torque fluctuation. The effect of tooth backlash on the dynamic performance of gerotor pump is limited and mostly depended on the torque fluctuation condition. The gerotor pump noise is dominated by the low frequency component around the mesh frequency. The vibration energy can be divided into two parts in the frequency domain. In the low frequency band, the vibration energy is caused by the mechanical vibration. However, in the high frequency band, the cavitation phenomena may cause the concentration of the vibration energy and resonant of pump structure.
Funder
National Natural Science Foundation of China
Project of State Key Laboratory of Precision Manufacturing for Extreme Service Performance, Central South University
Hunan Provincial Natural Science Foundation of China
Changsha Natural Science Foundation Project
Postgraduate Scientific Research Innovation Project of Hunan Province
Publisher
SAGE Publications
Subject
Mechanical Engineering,Geophysics,Mechanics of Materials,Acoustics and Ultrasonics,Building and Construction,Civil and Structural Engineering