Simulation of soil-cutting blade wear in an artificial abrasive environment based on the similarity theory

Izmailov, Andrey Yu.; Лискин, И. В.; Lobachevsky, Yakov P.; Sidorov, S. A.; Khoroshenkov, V. K.; Mironova, A. V.; Luzhnova, E. S

doi:10.3103/s1068367417010104

Cited by 10 publications

(2 citation statements)

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“…x In connection with this, when developing and designing the main technological parameters of ripping working tools, according to recommendations of scientists [10][11][12][13][14][15], the following was used:…”

Section: Methodsmentioning

confidence: 99%

“…According to the Coulomb-More theory of strength, the main indicator of the mechanical strength of the soil is the angle of internal friction. Based on the results of research [14][15][16], the side profile of the ripper working body made in the form of a logarithmic curve with the initial angle of installation to the bottom of the furrow equal to no more than ߚ = 45 − ߮ 2 ⁄ , does not compact the bottom of the furrow. In the case when the inclination of the tool to the bottom of the furrow will be more ߚ = 45 − ߮ 2 ⁄ , then two sliding surfaces are formed.…”

Section: Methodsmentioning

confidence: 99%

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Justification of parameters of working body of deep loosener

et al. 2023

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The article presents the analysis results on the study of physical-mechanical properties of soils in Uzbekistan and experimental studies on the influence of parameters and rational geometric shape of working tools on the quality of soil tillage while reducing energy costs. It has been established that soil moisture and hardness in the periods of basic and pre-sowing tillage differ significantly according to weather conditions, agrophonous background, and sowing and harvesting technology of agricultural crops. The peculiarities of different soils and the main directions of preserving and increasing their fertility are considered. The problems of optimization of physical properties and issues of the fertility state of irrigated soils are highlighted. Special attention is paid to the problems of improving soil's basic physical and mechanical properties. The use of effective technologies for improving and ameliorating irrigated lands, increasing fertility, and reducing and preventing soil salinization is proposed. For prevention of decrease and preservation of soil fertility, purposeful measures on improvement of physical properties of soils are recommended, the mechanism of which solution is the application of innovative technology of processing providing purposeful growth and development of root system, moderate moisture of soil, increased water permeability, moisture stocks, and reduction of salinization. To prevent intensive moisture evaporation after deep tillage, it is recommended to carry out agrophobic treatment by maximum leveling and creating a shallow crumbly surface layer. To substantiate the parameters of the deep loosener were based on the fact that the degree and magnitude of soil deformation depend on both the shape and parameters of interacting working bodies and on the physical and mechanical properties of the cultivated medium.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Justification of parameters of working body of deep loosener

et al. 2023

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Regularities of deformation of the bending of elastic elements and the parameters of vibrations of a dynamic tillage operating part

Джабборов

Sergeev

Захаров

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Revealing the regularities of bending deformation of elastic elements and vibration parameters of dynamic tillage operating parts is an urgent task, as it ensures the development of new innovative energy-efficient operating parts The aim of the study is to identify the patterns of deformation of elastic elements and oscillations of the wing of a dynamic tillage part of the operating part. The object of research is a dynamic arrow-shaped tillage operating part with a working width of 330 mm for surface tillage to a depth of 14 cm. The subject of research is the regularities of the bending deformation of elastic elements and the vibration parameters of dynamic tillage operating parts. The research was carried out using methods of mathematical modeling based on the study of physical laws that occur during soil cultivation; experimental studies on energy assessment of tillage operating part, analysis and generalization of experimental data. The scientific novelty of the work is represented by empirical dependencies for determining the value of the deflection of an elastic element, displacement of the extreme point of the wing and the amplitude of oscillations of the extreme point of the wing of a dynamic tillage operating part. The graphical and empirical dependences of the deflection value of the elastic element, the movement of the extreme point of the wing and the amplitude of its oscillations from the bending moment, the speed of movement and the load of the dynamic tillage operating part are given. It was found that within the range of bending moment variation from 36.2 to 95.35 N⋅m, the deflection of the elastic element ranges from 5.5 to 15.8 mm. At the same time, within the limits of the change in the speed of movement of the dynamic tillage worker from 1.94 to 3.61 m/s, the average value of the movement of the wing extreme point increases from 11.55 mm to 14.75 mm. The relationship of the parameters considered above on the bending moment, load and speed of movement of a dynamic tillage operating part is described by empirical dependencies with the coefficient of determination R 2 = 0.67 – 0.85. The error of the sample mean Sy of the investigated parameters of the dynamic operating part varied within 0.039 – 0.136.

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Calculation algorithm of allowable travel speed of a dynamic tillage tool

Джабборов

Sergeev

Захаров

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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The algorithm is the basis for creating a computer program to calculate and forecast the allowable travel speed (maximum and minimum) of innovative dynamic tillage tools attached to relevant implements. The source data for calculation were soil hardness, the coefficient of terra-dynamic resistance and the specific tractive resistance per unit of the active frontal area of an innovative dynamic tillage tool. The limitations, which were set by the agro-technical requirements to the surface tillage, were the uneven tillage depth, the roughness of the field surface, the ridges on the field surface after the tillage, and the soil loosening degree. The study aimed to design an algorithm and its generalized block diagram for determining and forecasting the allowable travel speed of an innovative dynamic tillage tool in various operational conditions. The study object was an arrow-shaped innovative dynamic tillage tool with the working width of 330 mm designed for the surface soil tillage to the depth of up to 14 cm. The study subject was a calculation algorithm for parameters and indicators that affect the allowable travel speed of a dynamic tillage tool. The study applied the methods of mathematical modelling and experimental investigations for the energy assessment of soil tillage tools. The scientific novelty of research is an algorithm and its generalized block diagram for calculating and forecasting the allowable travel speed of a dynamic tillage tool. The paper presents the procedure for calculating the parameters that have a significant effect on the allowable travel speed of a tillage tool.

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Simulation of soil-cutting blade wear in an artificial abrasive environment based on the similarity theory

Cited by 10 publications

References 0 publications

Justification of parameters of working body of deep loosener

Justification of parameters of working body of deep loosener

Regularities of deformation of the bending of elastic elements and the parameters of vibrations of a dynamic tillage operating part

Calculation algorithm of allowable travel speed of a dynamic tillage tool

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