In order to study the dynamic characteristics of the gearbox

TYCON has been used to construct the model

considering main influence factors such as the time-varying mesh stiffness

mesh damping

composite gear error

dynamic input and loading

torsional and bending stiffness of shafts

etc.Through dynamic simulation of steady and speed irregularity conditions

the variation of the key variable parameters

such as angular velocities

accelerations

torques of the shafts and gears had been gained.The system with enhanced and weakened third shafts have been simulated.