The effect of maneuvering the propulsion of a wheeled forestry vehicle on its maneuverability in difficult geotechnical conditions

The conducted research is aimed at solving the urgent scientific and practical problem of the operation of log-ging equipment on waterlogged soils, which are typical for more than 60% of the territory of the forest fund of the Rus-sian Federation. A complex mathematical model has been developed for the formation of tangential stresses in a soil mass during propulsion maneuvering, taking into account key parameters: the angle of rotation, the weight of the ma-chine, and the physical and mechanical properties of the soil. In the course of the study, new criteria for the effectiveness of shifting the inter-track mass of soil were estab-lished, based on the analytical ratio of the shear force pulses and the mass of the shifted soil. The numerical analysis demonstrates that targeted maneuvering with rotation angles of 15-20° or more makes it possible to ensure effective destruction of the inter-track space even at critical ground humidity up to 35%. Special attention is paid to the analysis of the cyclic effect of machinery on the ground during multiple passes. Practical recommendations have been developed to optimize the operating modes of forest machinery operators, in-cluding the choice of maneuvering angles and driving trajectories depending on soil moisture and the number of passes. The results obtained have significant practical value for the logging industry, making it possible to reduce envi-ronmental damage from soil cover damage by 20-25% and increase the operational efficiency of machinery by 15-20% by reducing downtime and increasing maintenance periods.