Journal
ENGINEERING FRACTURE MECHANICS
Volume 261, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2022.108238
Keywords
Fatigue; Fracture simulation; Fatigue crack growth; X-FEM; B-spline
Categories
Funding
- SIM (Strategic Initiative Materials in Flanders)
- IBN Offshore Energy
- VLAIO, Belgium [179P04718 W]
- [179P04718 W.]
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This paper presents an X-FEM based iterative framework for numerical simulation of three-dimensional fatigue crack propagation. B-spline curves and surfaces are used to accurately describe the crack geometry, and a new crack front extension method based on the Moller-Trumbore algorithm is introduced. Good agreement between numerical and experimental results validates the effectiveness of the method.
This paper presents an X-FEM based iterative framework for numerical simulation of threedimensional fatigue crack propagation. To accurately describe the crack geometry, B-spline curves and surfaces are used for the crack front and faces respectively. A new crack front extension method based on the Moller-Trumbore algorithm is introduced to achieve fully automated crack growth for complex geometries. To validate the presented work, three different cases are discussed: (1) compact tension specimens with an asymmetrically located hole, (2) a beam with a slanted crack subjected to a three-point bending load and (3) a beam with a slanted crack subjected to a torsion load. Good agreement between the numerical and experimental results is observed.
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