摘要
在建立了三维土壤颗粒模型的基础上,应用离散元法研究了耕深及耕速对深松铲耕作阻力的影响。在0.4~0.8 m/s的耕速变化范围内,耕深分别为180、220、260 mm的条件下,进行了仿真,并对接触力场和速度场进行了分析。结果表明,随着耕深及耕速的增加,耕作阻力均会增大,与理论研究相符。本研究可为今后进一步优化深松铲提供依据。
Based on the 3 D model of soil particles established in this paper, the effects of subsoiling depth and velocity on soil resistance applied on the subsoiler were analyzed using discrete element method （DEM）. The working process was simulated under three depths of 180 mm, 220 mm and 260 mm with the speed of 0.4m/s-0.8m/s . Contact force field and velocity field were analyzed too. The result shows that the soil resistance will inerease with the increasing of subsoi- ling depth and velocity which is in concordance with the theoretical results. This paper will provides a basis for further study on optimizing subsoilers.
出处
《农机化研究》
北大核心
2015年第2期71-74,共4页
Journal of Agricultural Mechanization Research
基金
"十二五"国家科技支撑计划项目(2011BAD29B08)
高等学校学科创新引智项目(B12007)
关键词
深松铲
耕作阻力
离散元法
仿真分析
subsoiler
soil resistance
discrete element method （DEM）
simulation
