Authors

Abstract

This study investigates the excessive energy consumption of traditional furrowing cutters used in sticky, heavy soils of orchards located in hilly and mountainous regions. A novel furrowing cutter was designed, taking the wetland rotary bending cutter as a reference. The bending radius, bending angle, and alpha angle were selected as design variables. Quadratic orthogonal regression and discrete element method (DEM) simulations were employed to analyse tool–soil dynamic interactions and assess the influence of key parameters on furrowing power consumption. Response surface analysis revealed that at a bending radius of 30.02 mm, bending angle of 109.97°, and alpha angle of 51.74°, the optimised cutter reduced power consumption by 12.9%, from 0.85 kW to 0.74 kW.

Abstract in Chinese

本研究针对丘陵山区果园粘重土壤条件下传统开沟刀具存在的高能耗和低效率问题，提出了一种优化设计方案。以湿地旋耕弯刀为参考，本研究设计了一种适用于丘陵山区果园的开沟刀具。通过选择刀具弯折半径、弯折角度和阿尔法角作为优化变量，结合二次正交回归实验和离散元法（DEM）仿真，分析刀具与土壤的动力学交互特性，探讨关键参数对开沟功耗的影响机制。实验采用Hertz-Mindlin with JKR模型构建仿真环境，响应曲面分析结果表明，在弯折半径30.02 mm、弯折角109.97°、阿尔法角51.74°的条件下，优化后的刀具功耗由0.85 kW降低至0.74 kW，减少了12.9%。该研究为丘陵山区果园开沟施肥机械化装备的设计与应用提供了理论依据和技术支持。