Effects of bionic non-smooth surface on reducing soil resistance to disc ploughing

Chirende, Benard; Li, Jianqiao; Wen, Lige; Simalenga, T.

doi:10.1007/s11431-010-4128-8

Cited by 27 publications

(11 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the difference between the model and the experiment was still less than 10%, in line with past FEM results [8,9,20]. Conforming to the general trend from past experiments, disc sample 9 gave the best performance with the highest draft force reduction of 15% compared to sample 1 which was just plain, and generally convex domes performed better than the plain ones and the concave dips [17,21]. The highest reduction of 15% is lower than that of the experiment which is at 19.5% reduction in horizontal force for sample 9 (Table 3 and Figure 8).…”

Section: Resultssupporting

confidence: 84%

“…The specification of the sensor showed an allowable horizontal force of 5 kN. Signals from the sensor were conducted using Wave Book/6 linked to Wave Book/512 for the acquisition of the signal [17]. The DASYLAB program on a computer was used to read the output of the experiment.…”

Section: Methodsmentioning

confidence: 99%

“…From Equation (1), it is seen that the main factor affecting the cutting resistance is the contact area between the tool and soil, and this was key in choosing convex domes and concave dips as a way of trying to reduce the contact area A in Equation (1) through biomimetics. Chirende et al have already done some indoor experiments on bionic disc ploughs where a significant reduction of 19% was recorded for bionic non-smooth surfaces with convex domes, however they did not apply finite element analysis in the study [17].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Application of Finite Element Analysis in Modeling of Bionic Harrowing Discs

Chirende

Vheremu

2019

Biomimetics

Self Cite

View full text Add to dashboard Cite

Ansys software was used to carry out three-dimensional finite element analysis (FEA) for biomimetic design of harrowing discs based on the body surface morphology of soil burrowing animals like dung beetle (Dicranocara deschodt) which have non-smooth units such as convex domes and concave dips. The main objective was to find out the effects of different biomimetic surface designs on reducing soil resistance hence the horizontal force acting on the harrowing disc during soil deformation was determined. In this FEA, soil deformation was based on the Drucker–Prager elastic–perfectly plastic model which was applied only at the lowest disc harrowing speed of 4.4 km/h which is within the limits of model. The material non-linearity of soil was addressed using an incremental technique and inside each step, the Newton–Raphson iteration method was utilized. The model results were analyzed and then summation of horizontal forces acting on the soil-disc interface was also done. An experiment was then conducted in an indoor soil bin to validate the FEA results. The FEA results are generally in agreement with those of the indoor experiment with a difference of less than or equal to the acceptable 10% with an average difference of 4%. Overall, convex bionic units gave the highest resistance reduction of 19.5% from 1526.87 N to 1228.38 N compared to concave bionic units.

show abstract

Section: Resultssupporting

confidence: 84%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application of Finite Element Analysis in Modeling of Bionic Harrowing Discs

Chirende

Vheremu

2019

Biomimetics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Several organization and institutions have also been trying to modify, introduce, and develop various tillage implements, and to mention some are: FAO in 1950s (Goe, 1987); Alemaya University and Jimma Agricultural Technical School in Ethiopia between 1955 and 1965 (Canaday, 1959; UNDP Report); Chilallo Agricultural Development Unit (CADU) later changed to Arsi Rural Development Unit (ARDU) in 1968 (Anon., 1969(Anon., , 1970(Anon., , 1971 (Anon., 1981); the Agricultural Implements Research and Improvement Centre (AIRIC) in 1985 (Pathak, 1988); Selam Vocational Training and Farm Implements Production Center (Zaugg, 1992); The National Institute of Agricultural Engineering, Silsoe, UK (NIAE) (Starkey, 1988); Ethiopian Ministry of Agriculture (MOA) (Gebresenbet et al, 1997a); and International Livestock Research Institute (ILRI) (Gebresenbet and Kaumbutho, 1997). Gebresenbet et al (1997a) showed that only a few researchers and farmers have been involved in innovation efforts in animal traction technology in Ethiopia with inadequate grasp of the context of the problems faced by many small farmers.…”

Section: Animal Drawn Implement (Ethiopian Ard Plough)mentioning

confidence: 99%

Effect of side-wings on draught: The case of Ethiopian ard plough (maresha)

Gebregziabher

Swert²,

Saeys

et al. 2016

Computers and Electronics in Agriculture

View full text Add to dashboard Cite

Please refer to any applicable publisher terms of use. maresha, for thousands of years. Maresha is a pointed, steel-tipped tine attached to a draught pole at an adjustable shallow angle. It has narrow side-wings, attached to the left and right side of it, to push soil to either side without inverting. The aim of this paper is to explore the effect of side-wings on draught using a field soil bin test facility. To this end, a mobile and an in-situ soil bin test system, for online measurements of draught, was designed and developed. This research considered tool geometry (maresha plough with and without side-wings) and rake angle (shallow-8 º , medium deep-15 º , and deep-24 º , representing primary, secondary and tertiary tillage processes in Ethiopia, respectively). Maresha plough with side-wings has greater contact area, between the moving soil and tool, than its wingless counterpart. When the ploughshare surface and soil slide relative to one another, the draught expected to increase with contact area, as adhesion and friction resistance increases with area. However, experimental analysis indicated that the maresha with side-wings required less draught compared to maresha without side-wings (p < 0.001). This might be attributed to the effect of side-wings on crack propagation by a wedging effect to enhance and facilitate subsequent ploughing. This paper also dealt with the effect of rake angle on draught. Though the depth setup was getting smaller d1

show abstract

“…2, а) со стойками 8 рабочих органов 2, выполненных в виде правосторонней 9 и левосторонней 10 плоскорежущих лап с продольными треугольными выступами 11 (рис. 2, б Для теоретического обоснования основных параметров рабочего органа пружинного выравнивателя необходимо определить условия его работы [14,15]. Качественному выравниванию почвы способствует анализ гребней и впадин образованных предыдущей почвообработкой.…”

unclassified

Theoretical prerequisites for the bionic substantiation of spring soil leveler working bodies parameters

Бабицкий

Sobolevsky

Kuklin

2019

Аграрная наука Евро-Северо-Востока

View full text Add to dashboard Cite

Теоретические предпосылки к бионическому обоснованию параметров рабочих органов пружинного выравнивателя почвы* © 2019. Л.Ф. Бабицкий, И.В. Соболевский, В.А. Куклин Академия биоресурсов и природопользования ФГАОУ ВО «Крымский федеральный университет им. В.И. Вернадского», г. Симферополь, Республика Крым, Российская Федерация В системе мероприятий по предпосевной обработке почвы особое значение следует уделять выравниванию почвы, обеспечивающему повышение равномерности заделки семян по глубине, оказывающему существенное влияние на увеличение урожайности. Основным решением данной проблемы является совершенствование конструкции выравнивателей с использованием механико-бионического подхода для аналитического описания оптимальных форм и параметров их рабочих органов. Предлагается конструкция рабочего органа пружинного выравнивателя почвы, режущие кромки подрезающих крыльев которого имеют выступы и впадины по форме логарифмической кривой с положительной выпуклостью кривизны во внутрь впадин, разработанная по бионическому прототипу медведки (Gryllotalpa). С использованием методов земледельческой механики определены теоретические зависимости рациональной глубины хода рабочих органов и величины тягового сопротивления пружинного выравнивателя почвы от скорости движения, конструктивных параметров и физико-механических свойств почвы, которые подтверждаются результатами экспериментальных исследований на черноземе южном карбонатном среднесуглинистом. Экспериментальный пружинный выравниватель почвы обеспечивал снижение тягового сопротивления на 7…8% (40…49 Н) и имел лучшую устойчивость хода по глубине в среднем в 1,5 раза (± 0,5 см) в сравнении с серийной моделью рабочих органов выравнивателя ВПН-5,6А.Ключевые слова: выравнивающие устройства, биологический прототип, гребни, впадины, мощность, тяговое сопротивление, рабочий орган Для цитирования: Бабицкий Л.Ф., Соболевский И.В., Куклин В.А. Теоретические предпосылки к бионическому обоснованию параметров рабочих органов пружинного выравнивателя почвы. Аграрная наука Евро-Северо-Востока. 2019; 20(1):48-56. uniformity of seeding in depth, which has a significant impact on increasing yields. The main solution to this problem is to improve the design of aligners using a mechanical-bionic approach for the analytical description of the optimal forms and parameters of their working bodies. The design of the working body of the spring soil leveler is proposed, the cutting edges of the undercutting wings of which have ridges and hollows in the form of a logarithmic curve with a positive convexity of curvature inside the depressions, developed by the bionic prototype of the mole cricket (Gryllotalpa). Using the methods of agricultural mechanics, the theoretical dependence of the rational depth of the working bodies and the value of the tractive resistance of spring soil leveler on the travel speed, design parameters and physical-mechanical soil properties, which are proved by the results of experimental research on the south carbonated middle loamy black earth have been establish...

show abstract

Effects of bionic non-smooth surface on reducing soil resistance to disc ploughing

Cited by 27 publications

References 9 publications

Application of Finite Element Analysis in Modeling of Bionic Harrowing Discs

Application of Finite Element Analysis in Modeling of Bionic Harrowing Discs

Effect of side-wings on draught: The case of Ethiopian ard plough (maresha)

Theoretical prerequisites for the bionic substantiation of spring soil leveler working bodies parameters

Contact Info

Product

Resources

About