The black soil of Northeast China is sticky and agglomerates easily, which often adheres to the surface of a traditional furrow opener during the furrowing process. In this paper, biomimetic design principles in resistance-reducing, anti-adhesion and resistance-reducing mechanism of biomimetic disc furrow opener were studied. Nine kinds of singular convex hull, nine kinds of singular wedge and nine kinds of mixed convex hull and wedge structural biomimetic disc furrow opener were designed, and the furrowing process with the soil simulated by finite element method (FEM).Three types of biomimetic disc furrow opener with less resistance were manufactured by laser processing for comparative test in soil bin based on the simulation results. The test results showed that the resistance of the biomimetic disc furrow opener was less than that of the ordinary disc. The soil-disc stress, influence of biomimetic structures, moisture content and furrow speeds on resistance were discussed. The resistance-reducing rate of D-BC-3 reached the maximum value 15.36% at the furrow speed of 0.6 m/s and the soil moisture content of 20%. It is believed that the biomimetic design principles can provide the significant inspirations for the future design of disc furrow opener with drag reduction.

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降阻/抗粘连机理及其在仿生圆盘开沟器中的应用

东北的黑土很粘，很容易结块，在耕作过程中经常粘附在传统的开沟器表面。本文研究了仿生圆盘开沟器的减阻，抗粘连和减阻机理的仿生设计原理。设计了九种奇异凸壳，九种奇异楔形和九种混合凸壳与楔形结构仿生圆盘开沟器，并通过有限元方法（FEM）模拟了土壤的开沟过程。三种类型的仿生圆盘根据模拟结果，通过激光加工制造了阻力较小的开沟器，用于土壤箱中的对比试验。试验结果表明，仿生圆盘开沟器的电阻小于普通圆盘开沟器的电阻。讨论了土壤圆盘应力，仿生结构，水分含量和犁沟速度对阻力的影响。在犁沟速度为0.6 m / s和土壤含水量为20％的情况下，D-BC-3的电阻降低率达到最大值15.36％。相信仿生设计原理可以为减少阻力的圆盘开沟器的未来设计提供重要的启示。