WIT Press

Stress Intensity Factors For Subsurface Fatigue Crack Growth Under Contact Loading

Price

Free (open access)

Paper DOI

10.2495/FR980401

Volume

19

Pages

10

Published

1998

Size

826 kb

Author(s)

S. Glodez, Z Ren & J. Flasker

Abstract

The paper describes a general computational model for simulation of subsurface fatigue crack growth in the contact area of mechanical elements. The model assumes that the initial crack develops along the slip line in a single crystal grain, where the maximum equivalent stress exceeds the local material strength. The position and magnitude of the maximum equivalent stress are determined with the Finite Element Analysis of the equivalent contact model, which is based on the Hertzian contact conditions with the addition of frictional forces. The Virtual Crack Extension method is then applied to the same model and used for simulation of the fatigue crack propagation from the initial to the critical crack length, when

Keywords