Analysis of Dynamic Characteristics of the Multistage Planetary Gear Transmission System with Friction Force

Table 1

The parameters of the 2-stage planetary gear.

	Parameters	Carrier	Ring	Sun	Planet
Stage 1	Mass (kg)	10.12	2.7	0.8	0.45
	Base diameter (mm)	112	150.12	59.2	42.29
	Number of teeth		71	28	20
	Module (mm)	2.25
	Engaging angle (^o)	26.09
	Meshing stiffness (N/m)	3.8 × 10^8
Stage 2	Mass (kg)	12.8	5.1	1.2	1.0
	Base diameter (mm)	160	236.8	59.2	84.57
	Number of teeth		84	21	30
	Module (mm)	3
	Engaging angle (^o)	26.04
	Meshing stiffness (N/m)	5 × 10^8