Bending properties of green forage maize in field

文献类型： 外文期刊

第一作者： Fu, Jun

作者： Fu, Jun;Xue, Zhao;Fu, Qianku;Ren, Luquan;Fu, Jun;Xue, Zhao;Fu, Qianku;Chen, Zhi;Ren, Luquan;Fu, Jun;Xue, Zhao;Fu, Qianku;Ren, Luquan;Chen, Zhi;Fu, Qianku

作者机构：

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING （ 影响因子：2.4； 五年影响因子：2.8 ）

ISSN： 1934-6344

年卷期： 2023 年 16 卷 4 期

页码：

收录情况： SCI

摘要： Stalk lodging is prone to occur during the harvesting of green forage maize due to the header and root anchorage, resulting in loss of harvest. In particular, the fallen stalk wraps around the header, causing a blockage and increasing the energy cost. To address this problem, the deflection model was analyzed and established and a novel method to explore the field bend characteristics of green forage maize was proposed. The effects of stalk diameter, bending angle, and cutting height on bending stress and Young's modulus were explored by using the method of in-situ measurement. Additionally, the bending deflection, axial displacement and measuring point displacement were obtained. Experimental results indicate that the stalk diameter and bending angle have a significant influence on bending stress. The bending stress has a positive correlation with bending angle and cutting height, while there is a negative correlation with stalk diameter. On the other hand, the bending angle, stalk diameter, and cutting height are closely related to the Young's modulus. The mean values of the Young's modulus decrease as a quadratic function with the increasing diameter and bending angle, while the cutting height has the opposite effect on it. Besides, the average values of bending deflection, axial displacement, and measuring point displacement exhibit an increasing trend when the bending angle and cutting height increase. This study results can provide a reference for studying the failure mechanism of green forage maize stalk harvesting, and the design of green forage maize harvesting machinery. Keywords: green forage maize, field measurement, bending stress, Young's modulus, deflection model, harvest

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