在旋转耕作过程中,分析了草土旋转耕作刀片之间的相互作用机制
Zhaojie Wang1,2, Xiangyu Li1, Junwei Li3,4
1College of Mechanical and Electrical Engineering, Shihezi University, Shihezi, 832003, China.
Scientific reports
|January 3, 2025
概括
研究人员开发了一种生物旋转耕作刀片 (B-RTB),灵感来自大黄蜂的爪子,以解决保护性耕作作业中的草纠. 这种创新的刀片显著降低了旋转扭矩,并改善了草断裂,提高了效率并防止了设备问题.
科学领域:
- 农业工程 农业工程
- 土壤力学 土壤力学
- 生物模拟学是一种生物模拟学.
背景情况:
- 在草土地上旋转耕面临着巨大的挑战,坚固的草会导致纠和阻力增加.
- 现有的旋转耕地设备难以有效地粉碎密集的碎,导致运营效率低下.
研究的目的:
- 设计和评估一个生物旋转耕作刀片 (B-RTB),灵感来自马尔莫塔爪子,以改善干管理.
- 为了研究土壤,草和旋转耕作机之间的相互作用机制.
- 为了优化参数,减少旋转扭矩和增加草断裂.
主要方法:
- 进行了草土复杂剪切性能测试,以分析由草含量影响的土壤剪切强度.
- 使用EDEM软件来建模和分析土壤,草和生物旋转耕作刀片之间的相互作用.
- 进行了三因素,三级二次回归直角测试,以确定最佳的刀片参数 (曲角度,间距,旋转速度).
主要成果:
- 草含量与垂直压力相对增加了土壤剪切强度.
- 生物旋转耕地刀片的最佳参数被确定为122°的曲角度,14.5mm的距离距离和255r·min-1的切割滚轮速度.
- 在最佳参数下,最小的旋转扭矩为15.327N·m,最大的吸管接触断裂达到2443.
结论:
- 与传统刀片相比,生物旋转地刀片 (B-RTB) 显示出显著的抗纠和减阻性能.
- B-RTB将旋转扭矩降低了6.50% (没有吸管) 和9.45% (有吸管),同时在铺设吸管时将吸管破裂率提高了6.67%.
- 该研究为可视化着陆部件和分析复杂的土壤-草系统中的旋转耕作机制提供了宝贵的见解.
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