Вынужденные колебания планетарных передач с элементами повышенной податливости

I A Pushkarev

doi:10.22213/2413-1172-2019-1-29-36

Authors

I. A. Pushkarev Kalashnikov ISTU

DOI:

https://doi.org/10.22213/2413-1172-2019-1-29-36

Keywords:

planetary gear, flexibility of elements, dynamic, vibrations

Abstract

The paper continues the research of dynamics of planetary gears with elements of the increased flexibility. The basis for the analytical model and input equations is the system of nine differential equations of dynamics of the planetary mechanism received earlier. In the generalized forces the engine moment, the moment caused by torsion of an elastic shaft of a sun gearwheel, and elastic forces in meshing of gearwheels and on satellites axes are considered. The planetary carrier’s speed is assumed to be constant. The rigidity of the axis of the satellite in the tangential direction considerably exceeds the rigidity of the axis in the radial direction, therefore, the displacement in the tangential direction is absent. The moment of the engine changes under the harmonious law. In this case forced vibrations of a sun gearwheel and the satellite can be considered separately from forced vibrations of the satellite in the radial direction owing to flexibility of the satellite axis. Amplitude-frequency characteristics of these oscillations are constructed. Characteristics of vibration processes are expressed through mass-dimensional, kinematic and strength parameters of the planetary gear taking into account flexibility of its elements. Influence of the relative height of the flexible axis section, gear ratio of the mechanism and module of gearing on the amplitude of forced vibrations and the position of the resonance area is investigated. Conclusions are drawn on limits of variation of these parameters and their influences on the structure of planetary gears.

Author Biography

I. A. Pushkarev, Kalashnikov ISTU

Post-graduate

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Там же.

Plekhanov F., Pushkarev A., Pushkarev I. Influence of layout features and parameters of planetary gear on its dynamics and strength characteristics. Mechanisms and Machine Science, 2018, vol. 51, pp. 481-494. DOI: 10.1007/978-3-319-60399-5.

Plekhanov F.I., Suntsov A.S., Molchanov S.M. Influence of planetary-gear structure on the load distribution. Russian Engineering Research, 2017, vol. 37, no. 12, pp. 1028-1032. DOI: 10.3103/S1068798X17120164.