Influence Factors of Resistance on Disk Inserting Soft Straws Into Sandy Soil

YI Yue; LIU Yangjiu; ZHANG Hengyu; LIU Chunfei; LI Yanjie

doi:10.13961/j.cnki.stbctb.2017.06.026

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Influence Factors of Resistance on Disk Inserting Soft Straws Into Sandy Soil

- Influence Factors of Resistance on Disk Inserting Soft Straws Into Sandy Soil
- Bulletin of Soiland Water Conservation Vol. 37, Issue 6, Pages: 157-161(2017)
- 作者机构：
  
  北京林业大学工学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2017.06.026
  CLC：
- Published：2017
- 稿件说明：
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YI Yue, LIU Yangjiu, ZHANG Hengyu, et al. Influence Factors of Resistance on Disk Inserting Soft Straws Into Sandy Soil[J]. Bulletin of Soiland Water Conservation, 2017, 37(6): 157-161.
DOI：

YI Yue, LIU Yangjiu, ZHANG Hengyu, et al. Influence Factors of Resistance on Disk Inserting Soft Straws Into Sandy Soil[J]. Bulletin of Soiland Water Conservation, 2017, 37(6): 157-161. DOI： 10.13961/j.cnki.stbctb.2017.06.026.

摘要

[目的]初步探讨采用离散元法研究插草问题的可行性，并定性分析插草阻力与刀盘运动速度间的关系，为立体固沙车在进行草方格的机械化铺设工作时合理工作参数的选取提供可靠的理论依据。[方法]利用离散元法建立了沙土颗粒-草带-刀盘构成的复杂系统的数值模型，并模拟插草刀盘在沙土地表插草的动态过程，分析刀盘插入速度、前进速度和草带密度等因素对插草阻力的影响。[结果]插草刀盘所受到的插草阻力会随着间距的减小而增大，随着前进速度和铅垂埋植速度的增大而增大。[结论]离散元法可以用于分析沙土地表插草的数值模拟研究。

Abstract

[Objective] In order to provide reliable theoretical foundation for the determination of reasonable working parameters for the machine of paving straw-checker sand barriers

the feasibility of inserting straws with Discrete Element Method (DEM) was investigated

and the relationship between the resistance of inserting straw and the speed of the disk blade was analyzed qualitatively.[Methods] A numerical model was built based on DEM for the complex system of sand particles

straws and disk blade

and the dynamic process of disk blade inserting straw was simulated with DEM. Besides

the influence factors on inserting resistance were discussed

such as inserting and moving velocities of disk and distance between straws.[Results] The inserting resistance of disk blade increases with the decrease of the distance between straws and the increase of horizontally moving velocity and vertical inserting velocity.[Conclusion] DEM can be applied to numerically study of straw-checkerboard paving on the surface of sand.

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