王学振,岳斌,高喜杰,郑智旗,朱瑞祥,黄玉祥.深松铲不同翼铲安装高度时土壤扰动行为仿真与试验[J].农业机械学报,2018,49(10):124-136.
WANG Xuezhen,YUE Bin,GAO Xijie,ZHENG Zhiqi,ZHU Ruixiang,HUANG Yuxiang.Discrete Element Simulations and Experiments of Disturbance Behavior as Affected by Mounting Height of Subsoiler’s Wing[J].Transactions of the Chinese Society for Agricultural Machinery,2018,49(10):124-136.
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深松铲不同翼铲安装高度时土壤扰动行为仿真与试验   [下载全文]
Discrete Element Simulations and Experiments of Disturbance Behavior as Affected by Mounting Height of Subsoiler’s Wing   [Download Pdf][in English]
投稿时间:2018-07-08  
DOI:10.6041/j.issn.1000-1298.2018.10.014
中文关键词:  深松铲  翼铲  安装高度  土壤扰动  离散元法  试验
基金项目:国家重点研发计划项目(2016YFD0200601、2016YFD020060101)、陕西省重点产业链项目(2018ZDCXL-NY-03-06)和杨凌示范区科技计划项目(2014NY-29)
作者单位
王学振 西北农林科技大学 
岳斌 西北农林科技大学 
高喜杰 西北农林科技大学 
郑智旗 西北农林科技大学 
朱瑞祥 西北农林科技大学 
黄玉祥 西北农林科技大学 
中文摘要:翼铲的安装高度是带翼深松铲的关键结构参数之一,其对深松土壤扰动行为产生重要影响。综合运用EDEM和室内土槽试验,研究了翼铲安装高度(55、75、95、115、135mm)对深松土壤扰动行为的影响。结果表明:随着翼铲安装高度增加,耕后犁底层土壤扰动面积先增大后减小,在翼铲安装高度为75mm时最大,水平耕作阻力逐渐减小,深松铲铲尖和犁底层圆弧段所受水平耕作阻力为深松铲水平耕作阻力的主要来源(90%以上),其随翼铲安装高度增大逐渐减小;翼铲安装高度直接影响耕作时不同深度土壤在不同方向的位移,当翼铲安装高度为75mm时,深松铲纵向中心位置的各层土壤在耕作方向的最大位移相对较小,其犁底层土壤在竖直方向最大位移相对较大,表层和耕作层土壤在竖直方向最大位移相对较小;翼铲安装高度对土壤扰动效果产生重要影响,且离散元仿真能够准确模拟深松土壤的扰动过程,5个翼铲安装高度下土壤膨松度、土壤扰动系数、土壤碎土系数、土壤纵向堆积角的试验值和仿真值的平均误差分别为11.69%、11.54%、14.20%、9.64%。
WANG Xuezhen  YUE Bin  GAO Xijie  ZHENG Zhiqi  ZHU Ruixiang  HUANG Yuxiang
Northwest A&F University,Northwest A&F University,Northwest A&F University,Northwest A&F University,Northwest A&F University and Northwest A&F University
Key Words:subsoiler  wing  mounting height  soil disturbance  discrete element method  experiment
Abstract:The mounting height of the wing is one of the key structural parameters of the winged subsoiler, which greatly affects disturbance behavior of subsoiling. The disturbance behavior and resistance under different heights of the wing (55mm, 75mm, 95mm, 115mm and 135mm) were compared and analyzed by the comprehensive use of EDEM and digitized soil-bin test. The results showed that with the increase of mounting height of the wing (MHW), the disturbance area of hardpan layer after subsoiling was increased first and then decreased, and it reached the maximum when MHW was 75mm;moreover, the horizontal tillage resistance was decreased gradually with the increase of MHW, and the horizontal tillage resistance of the share and arc section in the hardpan layer was the main source of horizontal tillage resistance of subsoiler (more than 90%), which was also decreased gradually with the increase of MHW;MHW directly affected the displacement of different directions of soil at different depths during tillage. When MHW was 75mm, the maximum displacement in the working direction of soil of each layer in the longitudinal center of the subsoiler was relatively small, the maximum displacement in the vertical direction of the soil in hardpan layer was relatively large, and the maximum displacement in the vertical direction of the top soil and the soil of tillage layer was relatively small;and a proper mounting height of the wing was of great importance to disturbance effectiveness, and the discrete element simulation could accurately simulate the disturbance behavior of subsoiling. The average errors of five mounting heights of the wing of soil bulkiness, soil disturbance coefficient, soil fragmentation parameter and longitudinal accumulation angle of surface soil between simulation and experiment were 11.69%, 11.54%, 14.20% and 9.64%, respectively.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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