This paper investigated the vibration-oil film coupling mechanism in axial piston pumps through an integrated dynamics model combining pump component dynamics with slipper/swashplate and valve plate/cylinder block lubrication models. The model was solved using a combined explicit-implicit approach with control volume method. Experimental validation confirmed the model effectiveness in predicting vibration characteristics. The results indicate that calculated results of coupled model show strong agreement with experimental data; in terms of oil film characteristics, increases of rotational speed lead to greater central oil film thickness, while pressure elevation results in reduces of oil film thickness at the center of high-pressure regions. The oil film pressure distribution exhibits periodic variation in sync with the plunger chamber pressure. Leakage increases markedly with both increases of pressure and speed, especially in high-pressure regions. The coupled model demonstrates superior predictive accuracy compared to conventional decoupled approaches. The research provides important theoretical support for the design of axial piston pumps.
XIANGPengjie, YANLiang, GELijia, et al. Development of a Radial-flux Machine with Multi-shaped Magnet Rotor and Non-ferromagnetic Yoke for Low Torque Ripple and Rotor Mass[J]. IEEE Transactions on Industry Applications, 2025, 61(2): 2897-2910.
[2]
XIANGPengjie, YANLiang, LIUXiaoshuai, et al. Structural Topology Design for Electromagnetic Performance Enhancement of Permanent-magnet Machines[J]. Chinese Journal of Mechanical Engineering, 2025, 38(1): 26.
[3]
CHENGMin, HEJingbo, et al. Opportunities and Challenges of Electrohydraulic Control Systems in the Electrification Era of Non-road Mobile Machinery[J]. Journal of Advanced Manufacturing Science and Technology, 2024, 4(2): 2024001.
[4]
LIShuai, ZHONGHong, et al. Fast Finite-time Feedback Linearization Sliding Mode Position Tracking Control of Electro-hydraulic Systems with Terminal Sliding Mode Disturbance Observer[J]. Journal of Advanced Manufacturing Science and Technology, 2024, 4(1): 2023019.
[5]
DINGRuqi, SUNGuohua, ZHANGJunhui, et al. A Review of Independent Metering Control System for Mobile Machinery[J]. International Journal of Hydromechatronics, 2025, 8(5): 1-39.
YEShaogan, CHENTianxing, CHENDing, et al. Tooth Surface Modification and Anti-wear Design of Spline between Cylinder and Shaft of Piston Pumps [J]. China Mechanical Engineering, 2025,36 (8): 1767-1773.
[8]
YEShaogan, LINQuan, ZHENGChenliang, et al. Dynamic Modeling and Vibration Response Analysis of an Internal Gear Pump[J]. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2025, 239(8): 2823-2840.
HANGYang, YANKanghao, HUANGDan. Analysis of Friction and Sealing Characteristics of Plunger Pair Considering Elastic Deformation of Plunger Sleeve[J]. China Mechanical Engineering, 2023,34(1): 17-26.
[11]
TSUTAT, KAWAKAMIM, FUJIWARAM, et al. Dynamic Response Analysis of a Piston-slipper System in Hydraulic Piston Pump with a Swash Plate[J]. Transactions of the Japan Society of Mechanical Engineers Series C, 1996, 62(594): 502-509.
[12]
CHENH X, CHUAP S K, LIMG H. Dynamic Vibration Analysis of a Swash-plate Type Water Hydraulic Motor[J]. Mechanism and Machine Theory, 2006, 41(5): 487-504.
[13]
YEShaogan, ZHANGJunhui, XUBing, et al. Theoretical Investigation of the Contributions of the Excitation Forces to the Vibration of an Axial Piston Pump[J]. Mechanical Systems and Signal Processing, 2019, 129: 201-217.
WANGHujiang, WANGTao, LINYu, et al. Dynamic Modeling and Characteristic Research of Motor System of Floating Port Plate Piston Pump[J]. Automotive Engineering, 2024, 46(11): 2122-2132.
GUJianning, ZHANGXiaobo, XIATianxiang, et al. Simulation and Experimental Method Study on Overturning Behavior of Aircraft Plunger Pump Cylinder[J/OL]. Journal of Beijing University of Aeronautics and Astronautics, 1-21[2025-05-29].
[18]
YEShaogan, SUNYintong, ZHANGJunhui, et al. A New Coupled Dynamic Model to Study the Vibration and Lubrication Characteristics of Slipper/Swash-plate Interface in an Axial Piston Pump[J]. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2025, 239(8): 1026-1049.
HOULiang, LAIWeiqun, CUIKai, et al. Modeling and Analysis of Oil Film Lubrication Characteristics of Plane Distribution Pair of Axial Piston Motor[J]. Journal of South China University of Technology (Natural Science Edition), 2021, 49(2): 99-109.
[21]
TANGHesheng, RENYan, XIANGJiawei. A Novel Model for Predicting Thermoelastohydrodynamic Lubrication Characteristics of Slipper Pair in Axial Piston Pump[J]. International Journal of Mechanical Sciences, 2017, 124/125: 109-121.
[22]
LONGJunzhi, LUYan, ZHANGHao, et al. Life Cycle Assessment of a Slipper/Swash Plate Friction Pair Based on Thermal-fluid-structure Lubrication State Dynamic Recognition[J]. Tribology International, 2024, 192: 109256.
YUEXingqi, WANGHui, ZHAOGuochao, et al. Analysis of Oil Film Characteristics of Port Plate Pair of Swash Plate Axial Piston Pumps[J]. Journal of Vibration and Shock, 2025,44(11):92-100.
HUMin, QIUTianxiang, WUZhe, et al. Study on Anti-overturning Lubrication Bearing Characteristics of Oil Film in Distribution Pair of Ultra-high Pressure and High Speed Swash Plate Axial Piston Variable Displacement Pump[J]. Journal of Mechanical Engineering, 2025,61(2): 358-370.
CHENDing, CHENJian, YEShaogan, et al. Influence of Mating Clearance on the Dynamics of Piston-slipper Assemblies and the Film Lubrication Characteristics [J]. Journal of Vibration and Shock, 2024,43 (22): 261-269.
[29]
ZHAIW M. Two Simple Fast Integration Methods for Large-scale Dynamic Problems in Engineering[J]. International Journal for Numerical Methods in Engineering, 1996, 39(24): 4199-4214.