多种材料与不同含水率土壤的离散元接触参数标定

doi:10.13304/j.nykjdb.2023.0523

摘要/Abstract

摘要：

现有土壤与触土部件材料间的接触参数适用范围较窄，难以模拟高含水率下的作业状况。为了探索多种材料与不同含水率土壤的粘附情况，更加准确地解决触土部件与土壤的粘附问题，以南方稻茬田土壤为研究对象，应用EDEM中的Hertz-Mindlin with JKR Cohesion模型，对不同含水率的土壤与45号钢、超高分子量聚乙烯（ultra-high molecular weight polyethylene， UHMWPE）、聚四氟乙烯（polytetrafluoroethylene，PTFE）的接触参数进行标定。在前期试验的基础上，以碰撞恢复系数、静摩擦系数、滚动摩擦系数和JKR为试验因素，土壤的滚动距离为试验指标设计了Box-Behnken四因素三水平试验。最后对所得回归模型进行优化，得到了含水率21%、26%、31%（±1%）的土壤与45号钢、UHMWPE、PTFE的碰撞恢复系数、静摩擦系数、滚动摩擦系数以及JKR的最优参数。仿真滚动距离与实测滚动距离的最大相对误差为3.46%，说明标定的参数准确可靠，可以为触土部件在进行减粘脱附设计时提供参考。

关键词: 含水率, 离散元法, 参数标定, 减粘脱附

Abstract:

The applicable range of contact parameters between existing soil and touching soil component materials is relatively narrow， making it difficult to simulate operating conditions under high moisture content. In order to explore the adhesion of various materials to soil with different moisture contents and more accurately solve the adhesion problem between touching soil components and soil， this article took southern stubble soil planting rice as the object， and used the "Hertz Mindlin with JKR Cohesion" model in EDEM to calibrate the contact parameters of soil with different moisture contents and 45# steel， ultra-high molecular weight polyethylene（UHMWPE）， polytetrafluoroethylene （PTFE）. On the basis of previous tests， Box-Behnken four factor and three level tests were designed with impact restitution coefficient， static friction coefficient， rolling friction coefficient and JKR as test factors and soil rolling distance as test indicators. Finally， the regression model was optimized， and the optimal parameters of collision coefficient of restitution， static friction coefficient， rolling friction coefficient and JKR of soil with 21%， 26%， 31% （±1%） moisture content and 45# steel， UHMWPE， PTFE were obtained. The maximum relative error between the simulated rolling distance and the measured rolling distance was 3.46%， indicating that the calibrated parameters were accurate and reliable， and provided reference for the design of touching soil components in reducing adhesion and detachment.

Key words: moisture content, discrete element method, parameter calibration, reducing adhesion and detachment

中图分类号:

S222

黄元昊, 全腊珍, 胡广发, 全伟, 石方刚. 多种材料与不同含水率土壤的离散元接触参数标定[J]. 中国农业科技导报, 2024, 26(3): 98-109.

Yuanhao HUANG, Lazhen QUAN, Guangfa HU, Wei QUAN, Fanggang SHI. Calibration of Discrete Element Contact Parameters for Various Materials and Soils with Different Moisture Content[J]. Journal of Agricultural Science and Technology, 2024, 26(3): 98-109.

图/表 19

参考文献 30

1	邢义胜,郭志军.土壤耕作部件宏观触土曲面设计研究现状分析[J].农机化研究,2014,36(1):1-4.
2	郭志军,周德义,周志立.几种不同触土曲面耕作部件的力学性能仿真研究[J].机械工程学报,2010,46(15):71-75.
	GUO Z J, ZHOU D Y, ZHOU Z L. Simulation research on mechanical performances of several kinds of cultivating components with different soil-engaging surfaces [J]. Trans. Chin. Soc. Mach. Eng., 2010, 46(15): 71-75
3	李庆达,郭建永,胡军,等.土壤耕作部件耐磨减阻处理的研究现状[J].表面技术,2017,46(2):119-126.
	LI Q D, GUO J Y, HU J, et al.. Research status of wear resistance and drag reduction treatment of soil cultivation components [J]. Surface Technol., 2017, 46(2): 119-126.
4	郭志军,周志立,张毅,等.土壤耕作部件仿生优化设计研究[J].中国科学(E辑:技术科学),2009,39(4):720-728.
5	郭志军,杜干,周志立,等.土壤耕作部件宏观触土曲面减阻性能研究现状分析[J].农业机械学报,2011,42(6):47-52.
	GUO Z J, DU G, ZHOU Z L, et al.. Actuality a nalysis of resistance-reducing properties on soil cultivating components with different macroscopic soil-engaging surfaces [J]. Trans. Chin. Soc. Agric. Mach.,2011,42(6):47-52.
6	任露泉.土壤粘附力学[M].北京:机械工业出版社,2011,1-243.
7	任露泉,陈德兴,陈秉聪.土壤粘附研究概述[J].农业工程学报,1990,6(1):1-7.
	REN L Q, CHEN D X, CHEN B C. A summary of study of soil adhesion [J]. Trans. Chin. Soc. Agric. Eng., 1990,6(1):1-7.
8	郑侃.耕整机械土壤减粘脱附技术研究现状与展望[J].安徽农业大学学报,2019,46(4):728-736.
	ZHENG K. Research status and prospect of soil antiadhesion technology for tillage equipment [J]. J. Anhui Agric. Univ., 2019,46(4):728-736.
9	贾洪雷,王万鹏,陈志,等.农业机械触土部件优化研究现状与展望[J].农业机械学报,2017,48(7):1-13.
	JIA H L, WANG W P, CHEN Z, et al.. Research status and prospect of soil-engaging components optimization for agricultural machinery [J]. Trans. Chin. Soc. Agric. Mach., 2017,48(7):1-13.
10	杜干.推土板触土曲面减粘技术综述[J].建筑机械,2013(9):81-84, 87.
11	CONG Q, REN L Q, CHEN B C, et al.. Using characteristics of burrowing animals to reduce soil-tool adhesion [J]. Trans. ASAE, 1999, 42(6):1549-1556.
12	REN L Q, WANG Y P, LI J Q, et al.. Flexible unsmoothed cuticles of soil minerals and their characterisics of reducing adhesion and resistance [J]. Chin. Sci. Bull., 1998, 43(2):166-169.
13	谭明锋,林博,张丽,等.土方机械减粘脱土技术研究概况[J].装备制造技术,2019(1):123-126.
14	王莲冀,廖劲杨,胡红,等.农机触土部件减粘脱附技术研究现状与展望[J].中国农机化学报,2021,42(8):214-221.
15	GUAN C S, FU J J, CUI Z C, et al.. Evaluation of the tribological and anti-adhesive properties of different materials coated rotary tillage blades [J]. Soil Tillage Res., 2021, 209:104933.
16	马云海,马圣胜,贾洪雷,等.仿生波纹形开沟器减黏降阻性能测试与分析[J].农业工程学报,2014,30(5):36-41.
	MA Y H, MA S S, JIA H L, et al.. Measurement and analysis on reducing adhesion and resistance of bionic ripple opener [J]. Trans. Chin. Soc. Agric. Eng., 2014,30(5):36-41.
17	赵雄,马行潇,高巧玲,等.仿生减阻树木移植机铲片设计与试验[J].农业工程学报,2018,34(16):37-42.
	ZHAO X， MA X X， GAO Q L， et al.. Design and experiment of bionic resistance reduction for tree transplanter shovel ［J］. Trans. Chin. Soc. Agric. Eng.， 2018，34（16）： 37-42.
18	曾智伟,马旭,曹秀龙,等.离散元法在农业工程研究中的应用现状和展望[J].农业机械学报,2021,52(4):1-20.
	ZENG Z W, MA X, CAO X L, et al.. Application status and prospect of discrete element method in agricultural engineering research [J].Trans. Chin. Soc. Agric. Mach., 2021,52(4):1-20.
19	张锐,李建桥,周长海,许述财.推土板表面形态对土壤动态行为影响的离散元模拟[J].农业工程学报,2007(09):13-19.
	ZHANG R, LI J Q, Zhou C H, et al.. Simulation of dynamic behavior of soil ahead of the bulldozing plates with different surface configurations by discrete element method [J]. Trans. Chin. Soc. Agric. Eng., 2007,23(9):13-19.
20	张锐,李建桥,李因武.离散单元法在土壤机械特性动态仿真中的应用进展[J].农业工程学报,2003(1):16-19.
	ZHANG R, LI J Q, LI Y W. Application of discrete element method in dynamic simulation of soil mechanical properties [J]. Trans. Chin. Soc. Agric. Eng., 2003,19(1):16-19
21	向伟,吴明亮,吕江南,全伟,马兰,刘佳杰.基于堆积试验的黏壤土仿真物理参数标定[J].农业工程学报,2019,35(12):116-123.
	XIANG W, WU M L, Lü J N, et al.. Calibration of simulation physical parameters of clay loam based on soil accumulation test [J]. Trans. Chin. Soc. Agric. Eng., 2019,35(12):116-123
22	郑娟,黄凰,廖宜涛等.长江中游地区油菜生产全程机械化技术进展与建议[J/OL].中国油料作物学报,2023:1-15[2023-09-22]. .
	ZHENG J, HANG H, LIAO Y T, et al.. Progress and suggestions on full mechanization of rapeseed production in the middle reaches of the Yangtze River [J/OL]. Chin. J. Oil Crop Sci., 2023 :1-15 [2023-09-22]. .
23	吴俊,俞文轶,张敏,等.2ZY-6型油菜毯状苗移栽机设计与试验[J].农业机械学报,2020,51(12):95-102, 275.
	WU J, YU W M, ZHANG M, et al.. Design and test of 2ZY-6 rapeseed carpet seedling transplanter [J]. Trans. Chin. Soc. Agric. Mach., 2020,51(12):95-102, 275.
24	祝英豪,夏俊芳,曾荣,等.基于离散元的稻板田旋耕功耗预测模型研究[J].农业机械学报,2020,51(10):42-50.
	ZHU Y H, XIA J F, ZENG R, et al.. Prediction model of rotary tillage power consumption in paddy stubble field based on discrete element method [J]. Trans. Chin. Soc. Agric. Mach.,2020,51(10):42-50.
25	马玉莹,雷廷武,庄晓晖.测量土壤颗粒密度的体积置换法[J].农业工程学报,2014,30(15):130-139.
	MA Y Y, LEI T W, ZHUANG X H. Volume replacement methods for measuring soil particle density [J]. Trans. Chin. Soc. Agric. Eng., 2014,30(15):130-139.
26	张智泓,佟金,陈东辉,等.不同材质仿生凸齿镇压器滚动件的模态分析[J].农业工程学报,2012,28(13):8-15.
	ZHANG Z H, TENG J, CHEN D H, et al.. Modal analysis of bionic convex teeth rolling component composed of different materials [J]. Trans. Chin. Soc. Agric. Eng., 2012,28(13):8-15.
27	麻芳兰,黄文波,李尚平,黄宗晓,滕筱.广西甘蔗赤红壤离散元模型参数标定[J].农机化研究,2023,45(11):18-26.
28	王金武,唐汉,王金峰,黄会男,林南南,赵艺.悬挂式水田单侧修筑埂机数值模拟分析与性能优化[J].农业机械学报,2017,48(8):72-80.
	WANG J WU, TANG H, WANG J F, et al.. Nu merical analysis and performance optimization experiment on hanging unilateral ridger for paddy field [J]. Trans. Chin. Soc. Agric. Mach., 2017,48(8):72-80.
29	李俊伟,佟金,胡斌,等.不同含水率黏重黑土与触土部件互作的离散元仿真参数标定[J].农业工程学报,2019,35(6):130-140.
	LI J W, TONG J, HU B, et al.. Discrete element simulation parameter calibration of interaction between clayey black soil with different moisture content and soil-contacting components [J]. Trans. Chin. Soc. Agric. Eng., 2019,35(6):130-140.
30	冯超. 基于黄黏土的辣椒鸭嘴式栽植器减粘脱附研究[D].贵阳:贵州大学,2023.
	FENG C. Study on reducing adhesion and desorption of pepper plantation based on yellow clay [D]. Guiyang: Guizhou University, 2023.

土壤含水率 Soil moisture content/%	45号钢45# steel		超高分子量聚乙烯UHMWPE		聚四氟乙烯PTFE
土壤含水率 Soil moisture content/%	范围 Range	平均 Average	范围 Range	平均 Average	范围 Range	平均 Average
21	0.704~0.926	0.819	0.502~0.524	0.515	0.382~0.423	0.409
26	1.132~1.865	1.458	0.755~1.224	0.948	0.566~0.619	0.590
31	0.767~0.978	0.860	0.637~0.804	0.746	0.521~0.669	0.570

土壤含水率 Soil moisture content/%	45号钢45# steel		超高分子量聚乙烯UHMWPE		聚四氟乙烯PTFE
土壤含水率 Soil moisture content/%	范围 Range	平均 Average	范围 Range	平均 Average	范围 Range	平均 Average
21	0.704~0.926	0.819	0.502~0.524	0.515	0.382~0.423	0.409
26	1.132~1.865	1.458	0.755~1.224	0.948	0.566~0.619	0.590
31	0.767~0.978	0.860	0.637~0.804	0.746	0.521~0.669	0.570

土壤含水率 Soil moisture content/%	滚动距离 Rolling distance/mm
土壤含水率 Soil moisture content/%	45号钢 45# steel	超高分子量聚乙烯 UHMWPE	聚四氟乙烯 PTFE
21	306.8	338.2	411.6
26	206.0	235.2	238.6
31	0	10.1	22.8

土壤含水率 Soil moisture content/%	滚动距离 Rolling distance/mm
土壤含水率 Soil moisture content/%	45号钢 45# steel	超高分子量聚乙烯 UHMWPE	聚四氟乙烯 PTFE
21	306.8	338.2	411.6
26	206.0	235.2	238.6
31	0	10.1	22.8

土壤含水率 Soil moisture content/%	45号钢45# steel		超高分子量聚乙烯UHMWPE		聚四氟乙烯PTFE
土壤含水率 Soil moisture content/%	范围 Range	平均值 Average	范围 Range	平均 Average	范围 Range	平均 Average
21	0.081~0.09	0.085	0.069~0.068	0.079	0.065~0.072	0.068
26	0.111~0.119	0.114	0.097~0.113	0.104	0.093~0.110	0.103
31	—	—	0.321~0.335	0.329	0.229~0.296	0.293