In the actual meshing process of spiral bevel gear, it belongs to a highly complex nonlinear contact problem, and there are some phenomena such as starting impact, tooth surface collision, etc. It is necessary to study its dynamic meshing performance.
According to the existing model, the speed of the small wheel is set to be 80rad/s, the acceleration time is 0.001s, the resistance moment of the big wheel is 500Nm, and the damping is 600. The dynamics analysis is carried out by using Abaqus finite element analysis software. Through Figure 1 and Figure 2, it can be observed that the small wheel is in an acceleration state within 0~0.001 s, and it is stable at 80rad/s from 0.001 s to 0.02 s. The big wheel is a passive wheel. During the small wheel acceleration, the big wheel is in an unstable state in the early stage, The stable speed is 20.43rad/s at 0.0075s.
Figure 3 and Figure 4 show the contact force in the X, Y and Z directions and the contact force on the tooth surface between the large and small gears. Through the change curve, it can be found that there is impact vibration when the spiral bevel gear starts to mesh and contact. The stable contact force is 6.37kN in 0.0075s, and the change trend is similar to the change trend of the large wheel speed.
