Determination of the Dynamic Characteristics of Torsional Oscillations of a Multimass System of a Wheeled Agricultural Tractor of Traction Class 1.4

The theoretical and computational studies of oscillatory processes in the power transmission of a wheeled tractor of traction class 1.4 of classical design with an internal combustion engine and with design changes are presented for the situation with an autonomous electric drive and with the use of an elastic-damping mechanism in the power transmission. To conduct the studies, enlarged calculation schemes of nine and eleven masses were developed. The frequencies and forms of natural oscillations, as well as resonant frequencies, were determined. To find the natural frequencies ω, a method based on solving the frequency equation in matrix form was used. Equipping the tractor with an elastic-damping mechanism allows shifting the natural frequencies, and replacing the power plant with an electric motor allows changing the amplitudes of the natural frequencies.