Technology and machine parameters for preparing the soil for sowing cotton

Abstract

The study aims to justify the design scheme and main parameters of the combined aggregate for soil preparation for cotton sowing on ridges. The authors have developed the technology of soil preparation for cotton sowing on ridges and the aggregate for its implementation. The technology and design scheme of the developed aggregate are presented. The unit consists of a mouldboard deep loosener with a sloping rack and a ridge maker. The basic principles and methods of classical mechanics, mathematical analysis, and statistics were used in this study. The optimum constructive scheme of combined aggregate is grounded. It was established that to provide formation of new ridges instead of existing ones on fields without stems of cotton with the required degree with minimum power consumption working surfaces of inclined deep looseners equipped with mouldboards and rippers should be turned to each other and shifted relative to each other in a longitudinal plane. The formation of ridges to the required degree with minimal energy input is ensured at a width and length of the subsoiler's chisel, respectively 5 and 20 cm, the width of the wing width 21 cm, wing length between 47 and 49 cm, minimum longitudinal spacing between subsoilers 35 cm.

Spatial problem of water distribution in open channels

“…s is ratio of door pipe height to channel pipe height The equation ( 9) [22] is calculated for the cross-sectional area of the main channel and the rectangular default channel, and it expresses the change of the free surface of the main channel concerning х . Below we present the formulas for calculating the cross-sectional areas of various types of main channels:…”

Simulation of Mouldboard Plough Soil Cutting Based on Smooth Particle Hydrodynamics Method and FEM–SPH Coupling Method

“…However, the experimental method requires significant labor, material, financial resources, and time, and it is also easily affected by seasonality [20][21][22]. Although analytical methods can evaluate cutting forces and soil behavior such as soil displacement and velocity, the solutions of the analytical models are primarily based on the concept of equilibrium limits under quasi-static conditions and predetermined assumptions regarding the damaged surface, and the shape of the tillage tool must be simplified or of regular geometry [23,24]. The numerical simulation method has been developed as an efficient calculation method in recent years.…”