Li Sheng, Wu Jian, Wan Yang, Su Benlong, Wang Youshan
Center for Rubber Composite Materials and Structures, Harbin Institute of Technology, Weihai 264209, China.
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150090, China.
Materials (Basel). 2024 Aug 7;17(16):3906. doi: 10.3390/ma17163906.
With the increasing requirements of agricultural machinery, the study of the contact relationship between the tire-soil interface and the improvement of traction efficiency has gradually become a main concern. In this study, the pattern on the agricultural tire was simplified into single-pitch pattern blocks. The pattern blocks were made of rubber material that was highly resistant to abrasion and bending. The experiment was carried out by pressing the three types of patterned block construction into the soil and the pure sliding under the soil. The simulation used the Coupled Eulerian-Lagrangian Method (CEL) to verify the experimental results. We found that the herringbone pattern block was subjected to the highest stress for the same depth of downward pressure. The horizontal force generated by the pure sliding was also the highest. The results showed that the numerically simulated and experimentally measured data exhibited similar trends and average values. In addition, the increase in the contact area between the tire and the soil reduced the compaction and sinking of the soil. The herringbone pattern structure not only had a large contact area but also produced the most significant shear force on the soil. Thus, it may generate greater traction in actual operations.
随着农业机械需求的不断增加，对轮胎-土壤界面接触关系的研究以及牵引效率的提高逐渐成为主要关注点。在本研究中，农业轮胎上的花纹被简化为单节距花纹块。花纹块由高耐磨和抗弯曲的橡胶材料制成。通过将三种类型的花纹块结构压入土壤并在土壤下进行纯滑动来进行实验。模拟使用耦合欧拉-拉格朗日方法（CEL）来验证实验结果。我们发现，在相同的向下压力深度下，人字花纹块承受的应力最高。纯滑动产生的水平力也最高。结果表明，数值模拟和实验测量的数据呈现出相似的趋势和平均值。此外，轮胎与土壤之间接触面积的增加减少了土壤的压实和下沉。人字花纹结构不仅具有较大的接触面积，而且对土壤产生的剪切力最为显著。因此，它在实际作业中可能产生更大的牵引力。
