期刊论文

Study on the Drag Reduction of Sub-soiling Shovel and Influence Factors of Tillage Resistance --Based on LS-DYNA

中文

农机化研究

1003-188X

2019

41

5

157-162

10.3969/j.issn.1003-188X.2019.05.030

17C1665:湖南省教育厅科学研究项目

本校为第一机构

为研究不同触土曲面深松铲的减阻效果及不同工作参数对深松铲耕作阻力的影响,设计了5种典型准线的深松铲结构,并通过ANSYS/LS-DYNA软件对深松铲切削土壤过程进行了仿真,对比分析了不同结构深松铲切削土壤时所受到的阻力,选择出减阻性能最好的深松铲结构。以优选的深松铲作为研究对象,对入土角、工作速度及工作深度等因素进行单因素试验,研究上述因素对耕作阻力的影响。试验结果表明:仿生变曲率深松铲的减阻性能最好,其耕作阻力最小（601 N）;入土角为24°时,深松铲耕作阻力最小;耕作阻力随工作速度和工作深度的增加而增大。该文可为深松铲结构的设计以及工作参数的选择提供一定的技术支持。

In order to study the drag reduction effect of deep loosening shovel with different curved surface contacting with soil and the influence of different working parameters on the tillage resistance of deep loosening shove. The five typical deep loosening shovel were designed, then, the process of cutting the soil with deep loosening shovel was simulated by ANSYS/LS-DYNA software. The resistance of different structure deep loosening shovel was compared and analyzed to select deep loosening shovel structure with the best drag reduction performance....