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Frequency response characteristics of rice stalk

机译：稻秆的频率响应特性

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摘要

In this study, dynamic characteristics of crop (rice) stalks were examined in order to make clear mechanical interaction between crop stalks and a combine reel, and obtain design parameters of a reel which contribute to an improvement of accuracy and efficiency in harvesting operation. First, frequency response characteristics (amplitude ratio against a shaking frequency) and natural frequency of rice stalks were made clear through the forced vibration experiment using a shaker, which can express dynamic characteristics of rice stalk. As a result, the calculation equation of natural frequency based on bending vibration theory for cantilever beams was applied to rice stalks, and parameters concerning natural frequency of a rice stalk were discussed. Further, Rayleigh method was applied to analysis of natural frequency of rice stalks with variety sectional area, and availability of this analyzing method was discussed by comparison with the experimental results.
机译：在这项研究中，研究了农作物秸秆的动态特性，以弄清农作物秸秆与联合收割机之间的机械相互作用，并获得了有助于提高收割作业的准确性和效率的卷轴设计参数。首先，通过使用振动器的强制振动实验，明确了稻秆的频率响应特性（与振动频率的振幅比）和固有频率，从而可以表现出稻秆的动态特性。结果，将基于悬臂梁弯曲振动理论的固有频率计算公式应用于稻杆，并讨论了有关稻杆固有频率的参数。此外，将瑞利方法应用于具有不同截面积的稻秆自然频率的分析，并与实验结果进行了比较，讨论了该分析方法的有效性。

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