THE ESTIMATION OF THERMAL ENERGY AMOUNT DURINGELASTIC COUPLING OPERATION OF THE SHIP'S SHAFT LINE

The paper presents calculated dependences for determining the amount of thermal energy released by an elastic coupling during torsional vibrations of the shaft line. The wall line is modeled by a two-stage rod with an elastic connection of the sections. Active forces are acting on the shaft line: on the engine side, represented by the partial sum of the Fourier series and the average value of the torque on the screw, as well as damping moments: on the screw side, the cylinder piston group and in the elastic element of the clutch. The simulation is performed for the nominal and resonant frequency of the engine. It has been found that the coupling dissipates oscillation energy better under non-harmonic loading conditions. The method of calculating thermal energy presented in the paper makes it possible to increase the informative value of thermometric data in the wall line monitoring system.