Journal
INTERNATIONAL JOURNAL OF FATIGUE
Volume 102, Issue -, Pages 37-47Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2017.04.014
Keywords
Fatigue crack growth; Linear elastic fracture mechanics; Non-proportional loading; Mixed mode
Funding
- Deutsche Forschungsgemeinschaft (DFG, Germany) [VO729/13-1]
- Fundamental Research Funds for the Central Universities (China) [WUT: 2015IVA022]
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An algorithm based on linear elastic fracture mechanics for three-dimensional fatigue crack growth simulation under non-proportional mixed-mode loading is proposed in the present paper. The crack growth behavior in thin-walled, hollow cylinders with a notch under combined non-proportional cyclic tension and torsion loadings are investigated with the finite element program ABAQUS and a 3D fracture analysis software FRANC3D. Different mixed-mode crack path prediction criteria are evaluated to estimate the crack growth direction. Fracture mode transition is observed, some influence factors are discussed. Crack growth cycles calculated based on the effective stress intensity factors satisfactorily match the experimental data for specimens tested under lower loading levels. (C) 2017 Elsevier Ltd. All rights reserved.
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