Torsion vibrations in the ship shafts with the LOW speed diesel engine accounitng torque distributions

A.I. Tarasenko

Low speed diesel engine is viewed as torsion system with distributing parameters consist from wheels (cylinders compartments, rowing propeller) connected with the shafts. Shafts can be imponderable (harshness only) or have distribute characteristic. Shafts can be under torque distributions that are caused by shafts material hysteresis or by damping in the bearings. The method of calculation of the characteristics of the torsional vibrations during stationary and transitional processes of the system diesel-shaft-propeller accounting torque distributions and variable diameters of shaft.

Key words: diesel engine, torsion vibrations, wave equalization, own frequency, form of the rippling, shape of vibrations, damping, torque distributions