Free Vibration Frequency Spectrum of Four-Planetary Gearing Box

摘要

Dynamic analysis of multi-mesh planetary gearings is very important for reduction of noise and vibration. Splitting of force flow into several planet wings is the main advantage of planetary gearings. As it can be devaluated by unequal load sharing on individual planet stages, the floating sun gear and flexible pins of planet gears are applied. This paper shows that dynamic model of such a gearing box is very complicated with many multiple eigenfrequencies. The gained frequency spectrum with multiple eigenvalues is derived and analyzed.