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Crack path and life prediction under mixed mode cyclic variable amplitude loading through XFEM
Date
2018-09-01
Author
Dirik, Haydar
Yalçınkaya, Tuncay
Metadata
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In the present paper, a mesh independent computational algorithm is developed and incorporated into a commercial finite element software (Abaqus) for automated fatigue crack growth analysis under mixed mode variable amplitude loading conditions. The algorithm calculates the stress intensity factor (SIF) at predetermined small crack growth increments in the finite element software by using Extended Finite Element Method (XFEM) and predict the fatigue crack growth (FCG) path through local symmetry (K-II = 0) criterion. The aforementioned algorithm also computes the FCG life by means of cycle-by-cycle integration method through Nasgro equation based on the equivalent SIF range. Load history effects are also taken into account by using appropriate retardation models according to nature of the loading. For verification purpose, experimental crack path trajectories and fatigue life data available in the open literature are compared with computational results. Quite good agreements are obtained between the computed and the experimental results.
Subject Keywords
Mechanical Engineering
,
Modelling and Simulation
,
Industrial and Manufacturing Engineering
,
General Materials Science
,
Mechanics of Materials
URI
https://hdl.handle.net/11511/49128
Journal
INTERNATIONAL JOURNAL OF FATIGUE
DOI
https://doi.org/10.1016/j.ijfatigue.2018.04.026
Collections
Department of Aerospace Engineering, Article
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BibTeX
H. Dirik and T. Yalçınkaya, “Crack path and life prediction under mixed mode cyclic variable amplitude loading through XFEM,”
INTERNATIONAL JOURNAL OF FATIGUE
, pp. 34–50, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/49128.