Open AccessInvestigation of the microrelief of the soil layer surface and its effect on the strength of soil resistance to tillage
Author(s) -
Igor Lvovich Abramov
Publication year - 2021
Publication title -
agrarnyj naučnyj žurnal
Language(s) - English
Resource type - Journals
eISSN - 2587-9944
pISSN - 2313-8432
DOI - 10.28983/asj.y2021i8pp87-90
Subject(s) - tillage , harrow , surface (topology) , distribution (mathematics) , soil science , computer science , environmental science , mathematics , geotechnical engineering , agricultural engineering , engineering , geometry , mathematical analysis , agronomy , biology
The lack of the operating elements strength calculating methods providing sufficient accuracy of the results is a significant problem in modern agricultural machinery development. The using calculation models do not take into consideration the microrelief of the treated surface, which leads to a significant error in determining both extreme and long-term loads on the working bodies of mechanisms. In this article author analyzes the cultivated soil treated surface microgeometry influence on the forces arising in the tillage tool. The existing design model is considered on the needle harrow example, its disadvantages are indicated and a way to eliminate them is proposed. Experimental data on the soil surface profile microroughnesses size study are presented, regularities of the microroughnesses random distribution are revealed, in particular, the assumption of the normal nature of this distribution is confirmed. The dependences based on the obtained data are proposed for a more accurate acting on the tillage tool loads calculation.