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Analysis of fluid vibration transfer path and parameter sensitivity of swash plate axial piston pump

High Technology Letters 2022年第2期28卷 217-226页

作者：赵建华 WANG Xinwei LIU Hang PEI Youzhi YANG Yong WU Zhaohua WANG Jin XING Lanchun DU Guojun Shijiazhuang Haishan Industrial Development Co. Ltd.Shijiazhuang 050200P.R.China fluid Power Transmission and Control Laboratory Yanshan UniversityQinhuangdao 066004P.R.China College of Civil Engineering and Mechanics Yanshan UniversityQinhuangdao 066004P.R.China

Taking swash plate axial piston pump as the research object,the mechanism of fluid vibration and transfer rule are analyzed.The pump shell can be assumed as the ultimate recipient of vibration transmission,the path model and differential equations from the fluid to the shell are established.The parameters of the path model are determined by the simulation software,and the mathematical model is solved by the simulation software.And time/frequency domain analysis of vibration acceleration of shell is presented.Based on the different influence of various parameters in the transfer path model on transfer characteristics and vibrational recipients,the time-varying parameters are studied by using sensitivity analysis theory,and the influence of the structural parameters on the vibration characteristics of vibration subject is quantitatively analyzed.The research in the paper provides theoretical basis for vibration analysis and structure parameter optimization of axial piston pump.

关键词： axial plunger pump fluid vibration transfer path shell vibration fault analysis

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fluid vibration Induced in T-Junction with Double Side Branches

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World Journal of Mechanics 2016年第4期6卷 169-179页

作者： Ryuhei Yamaguchi Gaku Tanaka Hao Liu Toshiyuki Hayase Graduate School of Engineering Chiba University Chiba Japan Institute of fluid Science Tohoku University Sendai Japan

A T-junction is a fundamental fluid element prevalent in pipe networks of water supplies and power plants. In the present study, a double T-junction was investigated for flow instability and fluid vibration. Both axi-aligned and skewed double T-junctions are examined from viewpoint of flow instability. With single-phase flow in an open-ended double T-junction, fluid vibration is induced in both side branches because of a high shear rate with a point of inflection. The frequency of vibration in the downstream branch is higher than that in the upstream branch. Except for the upstream branch in the skewed double T-junction, the frequency is higher than that in a single T-junction. The fluid vibrations are closely associated with the fluid interference created by the presence of the two side branches.

关键词： fluid vibration Flow Instability Shear Rate Double T-Junction Particle Image Velocimetry Laser Doppler Anemometry

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