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Experimental And Simulation Predicted Crack Paths For Al-2024-T351 Under Mixed-Mode I/Ii Fatigue Loading Using An Arcan Fixture, Eileen Miller
Experimental And Simulation Predicted Crack Paths For Al-2024-T351 Under Mixed-Mode I/Ii Fatigue Loading Using An Arcan Fixture, Eileen Miller
Theses and Dissertations
Mixed mode I/II fatigue experiments and simulations are performed for an Arcan fixture and a 6.35mm thick Al-2024-T351 specimen. Experiments were performed for Arcan loading angles that gave rise to a range of Mode I/II crack tip conditions from 0 ¡Ü ¦¤KII/¦¤KI ¡Ü ¡Þ. Measurements include the crack paths, loading cycles and maximum and minimum loads for each loading angle. Simulations were performed using three-dimensional finite element analysis (3D-FEA) with 10-noded tetrahedral elements via CRACK3D. While modeling the entire fixture-specimen geometry, a modified version of VCCT with automatic crack tip re-meshing and a maximum normal stress criterion were used to …