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A theoretical dynamic model to study the vibration response characteristics of an axial piston pump

机译：研究轴向活塞泵振动响应特性的理论动态模型

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摘要

A dynamic model with four masses and 19 degree of freedoms is proposed to investigate the vibration response characteristics of an axial piston pump. In the model, main parts are simplified by multiple lumped mass points connected with spring-damper elements. Experimental investigation is performed, and the discharge dynamic pressures and vibrations are measured to validate the dynamic model. Using the constructed model, influences of operating conditions (the discharge pressure, the rotational speed, and the displacement angle), and stiffness and damping coefficients between different contacting surfaces (the cylinder and valve plate, the piston and cylinder bore, and the slipper and swash plate) on the amplitude-frequency vibration responses and phase trajectory plots are analyzed. The findings showed that the vibration responses are significantly affected by the operating conditions, and are also considerably affected by the stiffness and damping coefficients. The rotational speed determines the fundamental frequency and its harmonics, and most of the harmonic vibration responses increase with increasing discharge pressure and displacement angle. The shape and the area defined by the phase trajectory are significantly changed by the operating conditions. The complex irregular motion might be changed into less irregular motion with decreasing discharge pressure, rotational speed and displacement angle.
机译：提出了一种具有四种质量和19度自由度的动态模型，以研究轴向活塞泵的振动响应特性。在该模型中，主部件通过与弹簧阻尼元件连接的多个集成质量点来简化。进行实验研究，测量放电动态压力和振动以验证动态模型。使用构造的模型，影响操作条件（排出压力，转速和位移角），以及不同接触表面（圆筒和阀板，活塞和圆筒孔的刚度和阻尼系数，以及拖鞋分析振幅频率振动响应和相位轨迹图的旋转斜盘。结果表明，振动响应受到操作条件的显着影响，并且也受到刚度和阻尼系数的显着影响。转速确定基本频率及其谐波，大部分谐波振动响应随着排出压力和位移角度的增加而增加。由相位轨迹限定的形状和区域由操作条件显着改变。复杂的不规则运动可能变成更不规则的运动，以降低排出压力，转速和位移角度。

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  • 来源
    《Mechanical systems and signal processing》 |2021年第3期|107237.1-107237.23|共23页
  • 作者

    Shaogan Ye; Junhui Zhang; Bing Xu; Liang Hou; Jiawei Xiang; Hesheng Tang;

  • 作者单位

    Department of Mechanical and Electrical Engineering Xiamen University Xiamen 361102 China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Hangzhou 310027 China;

    State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Hangzhou 310027 China;

    State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Hangzhou 310027 China;

    Department of Mechanical and Electrical Engineering Xiamen University Xiamen 361102 China;

    College of Mechanical and Electrical Engineering Wenzhou University Wenzhou 325035 China;

    College of Mechanical and Electrical Engineering Wenzhou University Wenzhou 325035 China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Axial piston pump; Dynamic model; Vibration response; Operating conditions; Contacting surfaces;

    机译：轴向活塞泵;动态模型;振动响应;运行条件;联系表面;

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