Abstract
The article is devoted to the scientific approach with the help of computer-aided design tools for modeling the processes of interaction of tillage tools with soil. The article has an applied character, which is expressed in the fact that the method of computer-aided design in Mathcad using software CAD COMPASS 3D has been used. The analyses of expressions in the form of three-dimensional graphs are widely presented and their detailed review is given, which can be used to perform the improvement of the design of units that perform the main treatment of the soil with a turnover of a layer. As a result of the work done, there was obtained a combined plowshare with additional flat-cutting working bodies, there was made a matrix of experiment planning, there was obtained a graph of the dependence of the width grip of the flat-cutting razor on the speed of the arable unit. There were substantiated the factors of influence on performance as a result of using the planning of the two-factor experiment due to the orthogonal plan, there were determined the optimal settings of the operation modes of the plowshare.
Highlights
The analysis of continuous symmetric plans of the second order showed that the maximum value of the determinant of the information matrix is achieved in the case when the moments of the plan are respectively equal
In Kuban State Agrarian University at the department of "Processes and machines in agribusiness" there were conducted the researches in the field of basic tillage
The plowshare contains the frame 1 determined the plow body 2, each of one is consisted of bay 3, plowshare 4, mouldboard 5 and regulated in height the flat-cutting razor 6 which is installed on bar 3from the side of field cut under the angle α= 15 - 45° to the movement of the plowshare oppositely to the angle of the slope of the plowshare and has a width, which is equal to the width of the grip of one body of the plowshare, such unit of flat-cutting razor gives the mirror reflection of the plowshare
Summary
The analysis of continuous symmetric plans of the second order showed that the maximum value of the determinant of the information matrix is achieved in the case when the moments of the plan are respectively equal. The levels of factors were chosen so that their optimal values, calculated theoretically or taking into account the existing limitations fell into the center of the variation interval.
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