Kozhushko A. Dynamic analysis and methods for improving the smoothness of a wheeled tractor when transporting liquid cargo

The thesis is devoted to solving a scientific and applied problem to improve the dynamic properties of the movement of tractors when transporting liquid in agricultural tanks by determining rational schemes and design parameters of the MTA to reduce the negative effect of low-frequency oscillations of the surface layer of the liquid in the tank on the smoothness of the tractor. The conditions that affect the dynamic component of the movement of tractors when transporting liquid in agricultural tanks are analyzed. The principles of taking into account the motion of the free surface of a liquid in a closed container are considered. The analysis of oscillatory processes of a complex mechanical system "tractor - tank" is carried out. The outlined methodology of a new approach for determining the oscillatory motion of a liquid in a closed container with a free surface. A dynamic analysis of the rectilinear movement of a wheeled tractor with a tank car during transport operations is carried out The spectral phenomena that extend the theory of oscillations are highlighted. The influence of the kinematic and power disturbance on the "tractor - tank" system is estimated, in particular, the con-ditions for the occurrence of parametric resonance are highlighted.