Engine-and-transmission installation frequency analysis of a wheeled forestry tractor

Abstract

The article provides a frequency analysis of an engine-and-transmission installation of a wheeled forestry tractor. It can be used for machine-building enterprises of the forest complex. During the wheeled forestry tractors operation in the engine-and-transmission installation, resonance phenomena may occur when the internal frequencies of the system coincide with the external disturbance. The solution of the problem was carried out on the basis of the developed equivalent dynamic circuit, which was described by the differential equations of torsional vibration. As a result of solving these equations, the values of the engine-and-transmission installation natural frequencies were obtained. A comparative analysis of the frequencies obtained with regard to the damping properties of the system has been made, and possible resonance zones have been identified. The information obtained allows selecting the optimal damping indicators for the wheeled forestry tractor engine-and- transmission installation operation in a resonant-free mode.