Abstract: In this study, a non-linear dynamics model of Ravigneaux compound planetary gearsets which
adopts the intermediate floating component is set up based on concentration parameter. By considering
the position errors and eccentric errors, the dynamic load sharing factors of the gearsets are calculated.
The relationship between central members radial support stiffness and the dynamic load sharing factors
is obtained and the influence of central members radial support stiffness on load sharing characteristic is
analyzed. The research results show that central members radial support stiffness affects the gear pairs
which are directly contacted to the central members, while the effect is rather small in the gear pairs
which are not directly connected. Reducing the radial support stiffness of the central members helps
improve the load sharing performance of the system.

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