Electrical engineering

Physics

Channel (broadcasting)

Geology

Finite element method

Gear tooth

Spur gear

Structural engineering

Algorithm

Engineering

Composite material

Vibration

Seismology

Fault (geology)

Acoustics

Materials science

Stiffness

Spur

Interference (communication)

Computer science

Computation

Stress relief

Tooth surface

Mechanical engineering

Science China Technological Sciences

Combining the loaded tooth contact analysis (LTCA) method and the gear dynamic model, a wear prediction model for spur gears with tip relief is established. The simulated wear depth is verified by the experimental results in a published reference. Based on the wear profile, the mesh stiffness and the tooth root stress obtained from the proposed model are compared with those obtained from the finite element model. Relative to the finite element method, the proposed method can greatly reduce the computation time. The effects of the tip relief and surface wear on the meshing and the dynamic characteristics are discussed. The tip relief can greatly decelerate the surface wear. Appropriate tip relief and slight wear can decrease the tooth interference and reduce the system vibration. Furthermore, the effects of the rotational speed on the wear depth are also studied and it is found that the quasi-static model is applicable to wear prediction when the rotational speed is away from the harmonic resonance peak.

Investigation on meshing and dynamic characteristics of spur gears with tip relief under wear fault