In order to acquire the gear meshing force and gear transmission torque of the 3K planetary gear reducer accurately

topology and structural analysis for 3K planetary gear reducer are conducted. Based on the analysis

translationalrotational coupling dynamic model is established. Through analyzing the displacement relationships between gears and carrier

the dynamics mathematical model is obtained. The dynamics simulation of a pract ical 3K planetary gear reducer in LMS Virtual. Lab Motion platform is completed. The results indicate that the validity of translationalrotat ional coupling dynamics model and simulation methods

moreover

the results can provide the dynamic input for further research

such as fatigue

vibration

and acoustics.