Abstract The working performance of agricultural machinery is largely determined by the walking performance of the wheel when driving in complex unstructured soil. However, the driving performance of existing wheels is not satisfactory for paddy field with muddy soil. The purpose of the current study is therefore to propose a novel rigid wheel for agricultural machinery which is applicable to paddy field with muddy soil. Firstly, a novel arc edge shaped wheel was designed based on the principles of mechanics on the ground. Then the driving performance of this arc edge shaped wheel was evaluated using FE modeling of interaction between rigid wheel and soil. Finally, the structure originally designed arc edge shaped wheel was improved according to FE modeling results, and this improved design was further evaluated by both FE simulation and prototype experiments. Both FE modeling and experimental results indicate that the improved arc edge shaped wheel proposed in this study has a good driving performance with regarding to wheel sinkage and soil reaction force. The proposed arc edge shaped wheel could be used as an effective component of rice harvester for paddy field with muddy soil.

中文翻译：

---

适用于泥质水田的新型农机刚性轮

摘要 农业机械的工作性能很大程度上取决于车轮在复杂非结构化土壤中行驶时的行走性能。然而，现有车轮的驱动性能不能满足泥泞土壤的水田。因此，本研究的目的是提出一种适用于泥土水田的新型农业机械刚性轮。首先，根据地面力学原理，设计了一种新颖的弧形棱形轮。然后使用刚性车轮与土壤之间相互作用的有限元模型评估该圆弧边形车轮的驱动性能。最后根据有限元建模结果对原设计的圆弧边形轮的结构进行改进，并且通过有限元模拟和原型实验进一步评估了这种改进的设计。有限元建模和实验结果表明，本研究提出的改进的弧边形车轮在车轮下沉和土壤反作用力方面具有良好的驱动性能。所提出的弧形边轮可作为泥质水田水稻收割机的有效部件。