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Mixed Mode Fatigue Crack Growth Under Variable Amplitude Loading Through XFEM Based Automated Algorithm
Date
2017-08-15
Author
Yalçınkaya, Tuncay
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https://hdl.handle.net/11511/70775
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Mixed mode fatigue crack growth path and life prediction under variable amplitude loading through extended finite element method
Dirik, Haydar; Yalçınkaya, Tuncay; Department of Aerospace Engineering (2017)
The main purpose of this study is to predict the crack growth path trajectories and fatigue crack growth (FCG) life under variable amplitude loading (VAL) by using Extended Finite Element Method (XFEM). For this purpose a computational algo- rithm is developed in Fortran which interacts with a commercial finite element soft- ware (Abaqus) and automatically propagates cracks which is initially modelled as stationary crack. Nasgro FCG equation is used for FCG life calculation which has a great accuracy among t...
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A new computational method based on the J(k)-integral is developed in order to calculate crack tip parameters for functionally graded materials (FGMs) that are subjected to mixed-mode thermal loading. By using the constitutive relations of plane thermoelasticity, J(k)-integral is modified and reduced to a domain independent form that contains area and line integrals. Temperature fields in FGMs and the components of the J(k)-integral are computed by means of the finite element method. In both thermal and mec...
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T. Yalçınkaya, “Mixed Mode Fatigue Crack Growth Under Variable Amplitude Loading Through XFEM Based Automated Algorithm,” 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/70775.