Gear Drive System: Dynamics Analysis Under Impact Load

Abstract

As a machine drive structure, a gear drive system can be subjected to impact loads, affecting regular operation. The dynamics analysis of the gear drive system subjected to impact loads can help to improve the safety of the gear drive structure. This paper briefly introduced the basic structure of the two-stage acceleration gear transmission system and the corresponding dynamics model and solved the equation of the dynamics model with the numerical iteration method of computers to realize the simulation calculation of the gear drive system. Simulation experiments were conducted on the two-stage acceleration gear in MATLAB software to test the shaft torque and shaft torsion angle under the two impact loads, a sudden increase in load, and a sudden increase in power source speed. The results showed that when the load suddenly increased, the shaft torque and shaft torsion angle of the gear shaft increased suddenly, and the oscillations attenuated until they stabilized; the stabilized shaft torque conformed to the drive torque of the load torque on different shafts, and torsion angle of the power shaft was the largest, followed by the load shaft and drive shaft; when the speed of the power source increased suddenly, the shaft torque and torsion angle of the gear shaft also increased suddenly, then decreased with oscillation attenuation, and eventually stabilized at the original values.