Dynamic modeling of soil-tool interaction: An overview from a fluid flow perspective

被引:69
作者
Karmakar, Subrata [1 ]
Kushwaha, R. Lal [1 ]
机构
[1] Univ Saskatchewan, Dept Agr & Bioresource Engn, Saskatoon, SK S7N 5AP, Canada
关键词
tillage; elasto-plastic; visco-plastic; computational fluid dynamics (CFD);
D O I
10.1016/j.jterra.2005.05.001
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The study of tillage tool interaction centers on soil failure patterns and development of force prediction models for design optimization. The force-deformation relationships used in models developed to date have been considering soil as a rigid solid or elasto-plastic medium. Most of the models are based on quasi-static soil failure patterns. In recent years, efforts have been made to improve the conventional analytical and experimental models by numerical approaches. This paper aims at reviewing the existing methods of tillage tool modeling and exploring the use of computational fluid dynamics to deal with unresolved aspects of soil dynamics in tillage. The discussion also focuses on soil rheological behaviour for its visco-plastic nature and its mass deformation due to machine interaction which may be analyzed as a Bingham plastic material using a fluid flow approach. Preliminary results on visco-plastic soil deformation patterns and failure front advancement are very encouraging. For a tool operating speed of 5.5 m s(-1), the soil failure front was observed to be about 100-mm forward of the tool. (c) 2005 ISTVS. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:411 / 425
页数:15
相关论文
共 40 条
[1]  
Bird R.B., 1983, REV CHEM ENG, V1, P1, DOI [10.1515/revce-1983-0102, DOI 10.1515/REVCE-1983-0102]
[2]   A NONLINEAR 3-D FINITE-ELEMENT ANALYSIS OF SOIL FAILURE WITH TILLAGE TOOLS [J].
CHI, L ;
KUSHWAHA, RL .
JOURNAL OF TERRAMECHANICS, 1990, 27 (04) :343-366
[3]   MICROSCOPIC CHANGES IN SOIL STRUCTURE DURING COMPRESSION [J].
DAY, PR ;
HOLMGREN, GG .
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1952, 16 (01) :73-77
[4]  
Desai C. S., 1980, Computational Methods in Nonlinear Mechanics. Proceedings of the TICOM Second International Conference, P205
[5]  
Duncan J.M., 1970, J SOIL MECH FDN ENG, V96, P1629, DOI [10.1061/JSFEAQ.0001458, DOI 10.1061/JSFEAQ.0001458]
[6]  
GHAVAMI M, 1974, T ASAE, V17, P166
[7]   SOIL FAILURE WITH NARROW TINES [J].
GODWIN, RJ ;
SPOOR, G .
JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 1977, 22 (03) :213-228
[8]   MECHANICAL-BEHAVIOR OF AGRICULTURAL SOILS [J].
HETTIARATCHI, DRP ;
OCALLAGHAN, JR .
JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 1980, 25 (03) :239-259
[9]  
Hettiaratchi D.R. P., 1967, J TERRAMECHANICS, V4, P45, DOI [10.1016/0022-4898(67)90126-7, DOI 10.1016/0022-4898(67)90126-7]
[10]   CALCULATION OF PASSIVE PRESSURE IN 2-DIMENSIONAL SOIL FAILURE [J].
HETTIARATCHI, DR ;
WITNEY, BD ;
REECE, AR .
JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 1966, 11 (02) :89-+