Статья 'Физическая сущность процесса взаимодействия с почвой рабочего органа с гибким элементом' - журнал 'Сельское хозяйство' - NotaBene.ru
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Agriculture
Reference:

Physics of the Process of a Work Tool with a Flexible Element Getting into Contact with the Soil

Pashchenko Vladimir Filimonovich

Doctor of Technical Science

Professor of the Department of Technology Systems Optimisation at Kharkiv Petro Vasylenko National Technical University of Agriculture

61143, Ukraina, Khar'kovskaya oblast', g. Khar'kov, ul. Sadovaya, 42

da4ka@i.ua
Syromyatnikov Yurii Nikolaevich

PhD in Technical Science

Kharkov National Technical University of Agriculture named after Petr Vasilenko

61002, Ukraine, Khar'kovskaya oblast', g. Khar'kov, ul. Alchevskikh, 44

gara176@meta.ua
Другие публикации этого автора
 

 
Khramov Nikita Sergeevich

temporarily unemployed

61143, Ukraina, Khar'kovskaya oblast', g. Khar'kov, ul. Sadovaya, 42

Gara176@i.ua

DOI:

10.7256/2453-8809.2017.3.24563

Review date:

28-10-2017


Publish date:

28-03-2018


Abstract: The object of the research is the process of a work tool of a tillage machine with a flexible element getting into contact with the soil. The subject of the research is a physical model that allows to analyze the process of a work tool with a flexible element getting into contact with the soil and mechanical and technological methods of improving the process of soil cultivation. The cable with a cross section area in a form of a circle is viewed as a wedge with a dull edge. The authors of the article pay special attention to the theory of granular medium statics. The extreme limit state at which even the slightest change in the volume and surface forces distorts the balance of the granular medium is especially interesting and useful for composing mathematical models of a work tool getting into contact with theh soil because pressure forces reach the highest point at such moments. The authors carried out their theoretical research using the method of the mathematical mechanical modelling of work tools getting into contact with the soil. The authors discover the dependence of the wedge cutting pressure on the cutting angle and depth. They prove that when the cutting angle is reduced, the cutting pressure of the soil goes down to the minimum at first but grows endlessly afterwards. The soil cutting effort is composed of two elements, the soil destruction effort and the effort to overcome the frictional force of the soil against the wedge. When the cutting angle is reduced, the soil destruction effort decreases while the effort to overcome the frictional force of the soil against the wedge increases. The sum of these two elements is equal to the minimal effort of the wedge cutting the soil. 


Keywords: internal friction angle, elementary area length, extreme limit state, dependence of cutting pressure, normal stress, process, wedge, draft resistance, work tool, weed control
This article written in Russian. You can find full text of article in Russian here .

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