Nonlinear dynamic and power-split characteristics of cross-connect double helical gear set

• 1、School of mechanical engineering, Shandong University, Jinan 250061

Abstract：In order to research nonlinear vibration and power-split characteristics of cross-connect double helical gear set, a nonlinear dynamic model was established including backlash and time varying mesh stiffness. The governing equations were solved using Runge-Kutta method to analyze the nonlinear vibration and power-split. The results show that with the increase of mesh frequency, the system will run into nonlinear vibration status and amplitude jump and multi-value phenomenon exist; with the increase of backlash, varying mesh stiffness coefficient, the vibrations get heavy and heavy load will result in double edge impact between mesh pair and double direction torsional vibration between adjacent gears; when the system runs in period status, the input power is split equally to the two outputs, but the dynamic load coefficient in two gears of input axis are unequal; when the system runs in nonlinear status, the input power is split in five different power-split forms and the input and output power are unsteady.

Keywords： Mechanical transmission Cross-connect double helical gear nonlinear dynamics backlash power split