Research Article

Study of the Influences of Transient Crack Propagation in a Pinion on Time-Varying Mesh Stiffness

Table 4

Mesh stiffness reduction caused by TPOC (with the model of step function but different lengths) in different deterioration levels.

Deterioration levels of crack before TPTP modelStiffness value ( N/m)Stiffness reduction caused by TPOC ( N/m)

Case 0
(θ)↓0.04
(θ)↓0.087
(θ)↓0.135
(θ)↓0.182

Case 0
(θ)↓0.036
(θ)↓0.083
(θ)↓0.13
(θ)↓0.178

Case 0
(θ)↓0.031
(θ)↓0.078
(θ)↓0.124
(θ)↓0.168

Case 0
(θ)↓0.026
(θ)↓0.073
(θ)↓0.119
(θ)↓0.164