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首页> 外文期刊>Shock and vibration >Simulation of the Vibration Characteristics for Agricultural Wheeled Tractor with Implement and Front Axle Hydropneumatic Suspension
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Simulation of the Vibration Characteristics for Agricultural Wheeled Tractor with Implement and Front Axle Hydropneumatic Suspension

机译：用工具和前轴水油悬架仿真农用轮筒振动特性

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摘要

The dynamic model is significant for the analysis of the vibrational characteristics of the wheeled tractor system with implement and front axle hydropneumatic suspension. In this work, the nonlinear stiffness and damping equations are derived first. The dynamic coupling relationship among cabin, three-point hitch structure, and implement are figured out, and the dynamic model of the half agricultural wheeled tractor/implement system is presented considering the effects of three-point hitch structure, passive silent blocks of cabin, and front axle hydropneumatic suspension together. To validate the model, the power spectral densities (PSDs) of the driver seat, cabin, chassis, and implement acquired from numerical simulations are compared with those from experiments, respectively. Under different forward speeds, two groups of results match well. Based on the model, the influences of passive cabin suspension, implement, and front axle hydropneumatic suspension on the dynamical characteristics of the tractor system are investigated. Results indicate that the front axle hydropneumatic suspension will deteriorate the ride comfort of the driver but improve the handing stability. The passive cabin suspension reduces the operational stability while improving much more ride comfort than the front axle hydropneumatic suspension does. The driver's comfortableness will be increased due to implement; meanwhile, handling stability will be compromised. Besides, the impacts of initial nitrogen volume, pressure of accumulators, and orifice diameter of throttle valves on the vibration characteristics of the tractor system are also inspected.
机译：动态模型对于分析轮式拖拉机系统的振动特性，具有工具和前桥液压悬浮液的振动特性。在这项工作中，首先导出非线性刚度和阻尼方程。驾驶室，三点悬挂结构和实施中的动态耦合关系被弄清楚，并考虑了三点挂钩结构，舱内被动沉默块的效果，提出了半农业轮拖拉机/实施系统的动态模型。和前轴液压气悬浮在一起。为了验证模型，将从数值模拟中获取的驾驶员座椅，机舱，底盘和实施的功率谱密度（PSDS）与实验中的那些进行比较。在不同的前进速度下，两组结果匹配良好。基于该模型，研究了无源舱悬架，实施和前桥液压悬架对拖拉机系统动力特性的影响。结果表明，前桥液压气悬架将使驾驶员的乘坐舒适性劣化，但提高了稳定性。无源舱悬架降低了操作稳定性，同时提高了比前桥液压气动悬浮液更高的速度舒适性。由于实施，驾驶员的舒适度将增加;同时，处理稳定性将受到损害。此外，还检查了初始氮气体积，蓄能器压力和节流阀的孔口直径对拖拉机系统的振动特性的影响。

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  • 来源
    《Shock and vibration》 |2019年第7期|9135412.1-9135412.19|共19页
  • 作者

    Zheng Enlai; Cui Song; Yang Yuanzhao; Xue Jinlin; Zhu Yue; Lin Xiangze;

  • 作者单位

    Nanjing Agr Univ Dept Mech Engn Coll Engn Nanjing 210031 Jiangsu Peoples R China;

    Nanjing Agr Univ Dept Mech Engn Coll Engn Nanjing 210031 Jiangsu Peoples R China;

    Nanjing Agr Univ Dept Mech Engn Coll Engn Nanjing 210031 Jiangsu Peoples R China;

    Nanjing Agr Univ Dept Mech Engn Coll Engn Nanjing 210031 Jiangsu Peoples R China;

    Nanjing Agr Univ Dept Mech Engn Coll Engn Nanjing 210031 Jiangsu Peoples R China;

    Nanjing Agr Univ Dept Mech Engn Coll Engn Nanjing 210031 Jiangsu Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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