applied fracture mechanics

Fracture Mechanics Based Models of Structural and Contact FatigueFracture Mechanics Based Models of Structural and Contact Fatigue 251691k 1− , k2−0.810.60.420.2x 00−2 −1 0 1 2 3Figure 10. Distributions of the stress intensity factors k − 1 (curve 1) and k− 2 (curve 2) in case of a surfacecrack: α = π/6, λ = 0.1, and q 0 = −0.5 (after Kudish and Burris [16]). Reprinted with permission fromKluwer Academic Publishers.factors k 1 , k 2 , and crack angle orientations α. The rest of contact fatigue modeling followsexactly the derivation presented in the section on Three-Dimensional Model of Contact andStructural Fatigue. Therefore, the fatigue life N with survival probability P ∗ of a contactsubjected to cyclic loading can be expressed in the form [1, 17]N = {( n 2 − 1)g 0[ max k 10] n } −1 {exp[(1 − n−∞