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首页> 外文期刊>佐賀大学農学部彙報 >Static and Dynamic Vertical Properties of Agricultural Tires
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Static and Dynamic Vertical Properties of Agricultural Tires

机译：农用轮胎的静态和动态垂直特性

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Agricultural tire properties are necessary for the vibration analysis, which is of importance for the optimum design of riding tractor. In this study, an investigation was conducted to evaluate static and dynamic response characteristics of front and rear tires mounted on a 2WD farm tractor. The vertical tire properties were measured by static load-deflection and non-rolling vertical free vibration methods. Mass moment of inertia of the test frame, which was needed for tire property computation, was also determined for a given system configuration. The measurement results include static load-deflection curves and free vibration time-histories. Static tire stiffness and energy dissipation were determined from the hysteresis loops, while dynamic stiffness and damping coefficient were derived from the logarithmic decrement of the free vibration data. The vertical tire stiffness increased with increasing load and inflation pressure except for low-pressure tires under high vertical load. Meanwhile, the vertical tire damping increased with increasing load and decreased with increasing inflation pressure.
机译：农业轮胎的性能对于振动分析是必不可少的，这对于骑乘拖拉机的最佳设计至关重要。在这项研究中，进行了一项调查，以评估安装在2WD农用拖拉机上的前后轮胎的静态和动态响应特性。轮胎的垂直性能通过静态载荷挠度和非滚动垂直自由振动方法进行测量。对于给定的系统配置，还确定了轮胎性能计算所需的测试框架的质量惯性矩。测量结果包括静态载荷-挠度曲线和自由振动的时程。静态轮胎的刚度和能量耗散是从磁滞回线确定的，而动态刚度和阻尼系数是从自由振动数据的对数递减得出的。垂直轮胎刚度随着载荷和充气压力的增加而增加，除了在高垂直载荷下的低压轮胎外。同时，垂直轮胎的阻尼随着负载的增加而增加，而随着充气压力的增加而减小。

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