A Coupled Torsional-Transition Nonlinear Vibration and Dynamic Model of a Two-Stage Helical Gearbox Reducer for Electric Vehicles

Table 1

The geometric properties of the TSHG system.

Properties	First stage		Second stage
	Pinion (p1)	Gear (1)	Pinion (p2)	Gear (2)
Teeth number
Base circle radius ()
Mass ()
Working face width ()
Helix angle ()
Pressure angle ()
Modulus ()