基于流体力学与离散元法的深松铲气动分析  

Pneumatic Analysis of the Subsoilers Based on the Fluid Mechanics and the Discrete Element Method

作　　者：屈通 李霞[1] 王维新[1] 汤明军[1] 张思远[1] Qu Tong;Li Xia;Wang Weixin;Tang Mingjun;Zhang Siyuan(College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China)

机构地区：[1]石河子大学机械电气工程学院,新疆石河子832000

出　　处：《农机化研究》2019年第1期34-39,共6页Journal of Agricultural Mechanization Research

基　　金：国家自然科学基金项目(5136505);新疆生产建设兵团科技攻关项目(2016AG016)

摘　　要：针对深松作业目前存在的主要问题是耕作阻力大,导致会增加能耗及降低作业速率,且深松铲的结构参数和深松方式直接影响着深松作业的牵引阻力及作业质量等问题,探究了气动深松铲进气口压强与出气孔数量之间的关系和主要受力部分,以改进深松铲设计方案。本研究对气动深松铲的结构及工作原理进行分析,构建了深松铲的气动力学模型,并采用离散元法对气动深松铲的受力进行仿真试验。结果分析表明:气动深松铲的进气口压强与出气口数量呈近似线性正相关关系。研究所得数据对气动深松耕作系统的改进具有重要的意义。Large traction resistance was currently the main problem on the subsoiling tillage,which increased the energy consumption and decreased the tillage velocity. The structural parameters of the subsoilers and subsoiling types had direct effect on the traction resistance and tillage quality of the subsoiling tillage. In order to explore the relationship between the air inlets pressure of the subsoilers and air outlets quantities and main stress-bearing positions,and to improve the subsoilers design plan,this paper analyzed the structure and cultivating principle of the pneumatic subsoilers,constructed the gas dynamical equation and pneumatic simulation,simulated the stress of the pneumatic subsoilers based on the discrete element. The results showed that the relationship between the air inlets pressure and the air outlets quantities of the pneumatic was approximately linear correlation position. The analytic data had significant effect on the improvement of the pneumatic subsoiling system.

关 键 词：深松铲 土壤 气动分析 离散元 

分 类 号：S121[农业科学—农业基础科学]