Affiliation:
1. Department of Mechanical Engineering, University of Seville, Seville, Spain
Abstract
This paper analyses various procedures for predicting crack growth as a function of the number of cycles in fretting fatigue tests with spherical contact. The evolution of the crack is calculated using fracture mechanics starting from an initial defect. Different growth laws are considered, including the behaviour of small cracks, by modifying either the threshold or the effective stress intensity factor value. Theoretical results are compared with those obtained in tests on Al 7075 T651. Results show that, although the final lives predicted by the different laws are similar, the predicted crack evolution does vary, and the most precise law is the one that modifies the growth threshold.
Subject
Applied Mathematics,Mechanical Engineering,Mechanics of Materials,Modelling and Simulation
Cited by
6 articles.
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