Xu Zihe, Qi Hongyan, Wang Lidong, Wang Shuo, Liu Xuanting, Ma Yunhai
The College of Biological and Agricultural Engineering, Jilin University, 5988 Renmin Street, Changchun 130025, China.
The Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, 5988 Renmin Street, Changchun 130025, China.
Biomimetics (Basel). 2025 May 11;10(5):306. doi: 10.3390/biomimetics10050306.
Subsoiling is an effective tillage method for breaking up the plough pan and reducing soil bulk density. However, subsoilers often encounter challenges such as high draft resistance and excessive energy consumption during operation. In this study, the claw toes of the badger and the scales of the pangolin were selected as bionic prototypes, based on which coupling bionic subsoilers were designed. The discrete element method (DEM) was used to simulate and analyze the interactions between soil and both the standard subsoiler and coupling bionic subsoilers. Field experiments were conducted to validate the simulation results. The simulation results showed that the coupling bionic subsoilers reduced the draft force by 7.70-16.02% compared to the standard subsoiler at different working speeds. Additionally, the soil disturbance coefficient of the coupling bionic subsoilers decreased by 5.91-13.57%, and the soil bulkiness was reduced by 2.84-18.41%. The field experiment results showed that coupling bionic subsoilers reduced the average draft force by 11.06% and decreased the soil disturbance area. The field experiments validated the accuracy of DEM simulation results. This study provides valuable insights for designing more efficient subsoilers.
深松是一种打破犁底层和降低土壤容重的有效耕作方法。然而，深松机在作业过程中经常遇到诸如牵引阻力大、能耗过高的问题。在本研究中，选取獾的爪趾和穿山甲的鳞片作为仿生原型，在此基础上设计了耦合仿生深松机。采用离散元法（DEM）模拟分析了土壤与标准深松机及耦合仿生深松机之间的相互作用。进行了田间试验以验证模拟结果。模拟结果表明，在不同工作速度下，耦合仿生深松机比标准深松机的牵引阻力降低了7.70-16.02%。此外，耦合仿生深松机的土壤扰动系数降低了5.91-13.57%，土壤松散度降低了2.84-18.41%。田间试验结果表明，耦合仿生深松机的平均牵引阻力降低了11.06%，并减小了土壤扰动面积。田间试验验证了DEM模拟结果的准确性。本研究为设计更高效的深松机提供了有价值的见解。
