A dynamic model for the planetary bearings in a double planetary gear set

Liu, J. and Li, X. and Xia, M. (2023) A dynamic model for the planetary bearings in a double planetary gear set. Mechanical Systems and Signal Processing, 194: 110257. ISSN 0888-3270

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Double planetary gear sets (DPGSs) are widely applied to high power and high torque mechanical transmission systems due to the high loading capacity, steady transmission, and high transmission efficiency. Most previous works studied the planetary bearing vibration characteristics without the gear excitations. This work establishes a dynamic model for a DPGS containing all components (sun gear, ring gear, carrier, inner planet, outer planet, planetary bearing roller, and planetary bearing cage). The components’ excitations in this work are more comprehensive than the reported references. The proposed model considers the planetary bearing roller and cage dynamics. Moreover, the gear interactions, planetary gear-bearing-carrier interactions, and roller-cage interactions are contained in the proposed model. The vibrations of planetary bearing roller, planet, carrier, and planetary bearing cage are analyzed. The effect of sun gear rotation speed on the planetary bearing contact force, planetary bearing roller-cage impact force, and vibrations of planetary bearing parts are studied. The simulated and experimental results are compared to prove the correctness of proposed model. Moreover, the results from proposed model and model without the cage are compared to show the advantage of proposed model.

Item Type:
Journal Article
Journal or Publication Title:
Mechanical Systems and Signal Processing
Additional Information:
Export Date: 30 March 2023
Uncontrolled Keywords:
?? double planetary gear set (dpgs)dynamic modelplanetary bearingvibrationssignal processingcivil and structural engineeringmechanical engineeringcontrol and systems engineeringcomputer science applicationsaerospace engineering ??
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Deposited On:
20 Apr 2023 15:05
Last Modified:
15 Jul 2024 23:41