虚拟样机技术在轴向柱塞泵仿真分析中的应用
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摘要
固液耦合效果对柱塞泵运动学与动力学特性影响很大。利用有限元分析软件,建立柱塞泵刚柔耦合模型,在此基础上建立其固液耦合虚拟样机模型。仿真研究斜盘倾角、主轴转速对柱塞泵运动学和动力学特性的影响,以及柱塞腔内压力变化规律。结果表明:泵的出口流量及压力脉动幅值随斜盘倾角的增大而增大;柱塞加速度与主轴转速的平方呈正比,造成柱塞泵受到的液压冲击力急剧增大。研究结果为柱塞泵性能的深入分析提供了参考。
The effect of solid-liquid coupling has great influence on the kinematics and dynamics of the piston pump. The rigid-flexible coupling model of the piston pump was established by using finite element analysis software. And the virtual prototype model of the solid-liquid coupling was established based on this. The influence of the swash plate angle and the shaft velocity on the kinematics and dynamics characteristics of the piston pump was researched, as well as the change rules of the hydraulic pressure in the piston. The results show that the flow and pressure fluctuation amplitude of the pump are increased with the increase of swash plate angle; the acceleration of the piston is proportion to the square of the shaft velocity, meanwhile the hydraulic impact force of the pump is increased rapidly. The results provide a reference for the further analysis of the performance of the piston pump.
The effect of solid-liquid coupling has great influence on the kinematics and dynamics of the piston pump. The rigid-flexible coupling model of the piston pump was established by using finite element analysis software. And the virtual prototype model of the solid-liquid coupling was established based on this. The influence of the swash plate angle and the shaft velocity on the kinematics and dynamics characteristics of the piston pump was researched, as well as the change rules of the hydraulic pressure in the piston. The results show that the flow and pressure fluctuation amplitude of the pump are increased with the increase of swash plate angle; the acceleration of the piston is proportion to the square of the shaft velocity, meanwhile the hydraulic impact force of the pump is increased rapidly. The results provide a reference for the further analysis of the performance of the piston pump.
引文
[1]杨智炜,徐兵,张斌.基于虚拟样机技术的轴向柱塞泵特性仿真[J].液压气动与密封,2006(3):33-36.YANG Z W,XU B,ZHANG B.Simulation of Axial Piston Pump Characteristic Based on Virtual Prototype Technology[J].Hydraulics Pneumatics & Seal,2006(3):33-36.
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[5]高殿荣,范卓立.基于虚拟样机技术的轴向柱塞泵运动特性仿真分析[J].液压与气动,2007(4):25-29.GAO D R,FAN Z L.The Kinematic Characteristic Simulation of Axial Piston Pump Based on Virtual Prototype Technology[J].Chinese Hydraulics & Pneumatics,2007(4):25-29.
[6]童水光,王相兵,钟崴,等.基于虚拟样机技术的轴向柱塞泵动态特性分析[J].机械工程学报,2013,49(2):174-182.TONG S G,WANG X B,ZHONG W,et al.Dynamic Characteristics Analysis on Axial Piston Pump Based on Virtual Prototype Technology[J].Journal of Mechanical Engineering,2013,9(2):174-182.
[7]杨逢瑜,胡敏,马德江,等.斜柱塞斜轴式轴向柱塞泵柱塞的运动学及动力学特性分析[J].兰州理工大学学报,2011,37(2):52-56.YANG F Y,HU M,MA D J,et al.Analysis of Kinematic and Dynamic Characteristics of Piston in Cam-type Axial Piston Pump with Inclined Piston[J].Journal of Lanzhou University of Technology,2011,37(2):52-56.
[8]ROCCATELLO A,MANCO S,NERVEGNA N.Modelling a Variable Displacement Axial Piston Pump in a Multibody Simulation Environment[J].Journal of Dynamic Systems,Measurement and Control,2007,129(4):456-468.
[9]薄纪康,吴小锋.柱塞泵机液动态耦合仿真与实验研究[J].中国机械工程,2014,25(3):410-416.BO J K,WU X F.Simulation and Experimental Research on Mechanical-hydraulic Coupling of Piston Pump[J].China Mechanical Engineering,2014,25(3):410-416.
[10]孙毅,姜继海,程孟专,等.虚拟样机技术在轴向柱塞泵运动仿真与分析中的应用研究[J].液压与气动,2010(2):25-27.SUN Y,JIANG J H,CHENG M Z,et al.Research and Application of Virtual Prototype Technology Based on Dynamic Simulation and Analysis of Axial Piston Pump[J].Chinese Hydraulics & Pneumatics,2010(2):25-27.
[11]倪斯亮.表面微坑对高压轴向柱塞泵滑靴副油膜性能的影响[J].润滑与密封,2018,43(6):30-34.NI S L.Effect of Surface Micro Pit on Oil film Performance of Slipper Pair in Axial Piston Pump Under High Pressure[J].Lubrication Engineering,2018,43(6):30-34.
[2]李春光,徐兵,许书生,等.基于虚拟样机的轴向柱塞泵运动分析[J].机床与液压,2010,38(7):92-94.LIC G,XU B,XU S S,et al.Kinematic Analysis of Axial Piston Pump Based on Virtual Prototype[J].Machine Tool & Hydraulics,2010,38(7):92-94.
[3]翟江,周华.海水淡化轴向柱塞泵的虚拟样机技术研究[J].华中科技大学学报(自然科学版),2012,40(3):108-112.ZHAI J,ZHOU H.Virtual Prototype Technology for Axial Piston Pumps Used in Seawater Desalination[J].Journal of Huazhong University of Science and Technology(Nature Science),2012,40(3):108-112.
[4]徐兵,张军辉,杨华勇.基于虚拟样机的轴向柱塞泵柱塞副仿真分析[J].兰州理工大学学报,2010,36(3):31-37.XU B,ZHANG J H,YANG H Y.Simulative Analysis of Piston-cylinder Pair of Axial Piston Pump Based on Virtual Prototype[J].Journal of Lanzhou University of Technology,2010,36(3):31-37.
[5]高殿荣,范卓立.基于虚拟样机技术的轴向柱塞泵运动特性仿真分析[J].液压与气动,2007(4):25-29.GAO D R,FAN Z L.The Kinematic Characteristic Simulation of Axial Piston Pump Based on Virtual Prototype Technology[J].Chinese Hydraulics & Pneumatics,2007(4):25-29.
[6]童水光,王相兵,钟崴,等.基于虚拟样机技术的轴向柱塞泵动态特性分析[J].机械工程学报,2013,49(2):174-182.TONG S G,WANG X B,ZHONG W,et al.Dynamic Characteristics Analysis on Axial Piston Pump Based on Virtual Prototype Technology[J].Journal of Mechanical Engineering,2013,9(2):174-182.
[7]杨逢瑜,胡敏,马德江,等.斜柱塞斜轴式轴向柱塞泵柱塞的运动学及动力学特性分析[J].兰州理工大学学报,2011,37(2):52-56.YANG F Y,HU M,MA D J,et al.Analysis of Kinematic and Dynamic Characteristics of Piston in Cam-type Axial Piston Pump with Inclined Piston[J].Journal of Lanzhou University of Technology,2011,37(2):52-56.
[8]ROCCATELLO A,MANCO S,NERVEGNA N.Modelling a Variable Displacement Axial Piston Pump in a Multibody Simulation Environment[J].Journal of Dynamic Systems,Measurement and Control,2007,129(4):456-468.
[9]薄纪康,吴小锋.柱塞泵机液动态耦合仿真与实验研究[J].中国机械工程,2014,25(3):410-416.BO J K,WU X F.Simulation and Experimental Research on Mechanical-hydraulic Coupling of Piston Pump[J].China Mechanical Engineering,2014,25(3):410-416.
[10]孙毅,姜继海,程孟专,等.虚拟样机技术在轴向柱塞泵运动仿真与分析中的应用研究[J].液压与气动,2010(2):25-27.SUN Y,JIANG J H,CHENG M Z,et al.Research and Application of Virtual Prototype Technology Based on Dynamic Simulation and Analysis of Axial Piston Pump[J].Chinese Hydraulics & Pneumatics,2010(2):25-27.
[11]倪斯亮.表面微坑对高压轴向柱塞泵滑靴副油膜性能的影响[J].润滑与密封,2018,43(6):30-34.NI S L.Effect of Surface Micro Pit on Oil film Performance of Slipper Pair in Axial Piston Pump Under High Pressure[J].Lubrication Engineering,2018,43(6):30-34.