Phase Field Cohesive Zone Modeling for Fatigue Crack Propagation in Quasi-Brittle Materials

Phase Field Cohesive Zone Modeling for Fatigue Crack Propagation in Quasi-Brittle Materials

6th February 2024 | Abedulghader Baktheer, Emilio Martínez-Pañeda, Fadi Aldakheel
This paper presents a phase field cohesive zone model (PF-CZM) for simulating fatigue crack propagation in quasi-brittle materials, such as concrete. The PF-CZM extends the traditional cohesive zone method to account for fatigue-induced crack growth, incorporating fatigue degradation functions and experimental validation across various loading scenarios. The model is validated against experimental data for pre- and post-peak cyclic loading, low- and high-cycle fatigue, and mixed-mode crack propagation. The results demonstrate the model's ability to accurately capture fatigue crack propagation in concrete-like materials, with a focus on hysteretic behavior, S-N curves, fatigue creep curves, and the Paris law. The model is implemented in ABAQUS using a user material subroutine, and numerical simulations show good agreement with experimental results for monotonic, cyclic, and fatigue loading. The PF-CZM approach is extended to include fatigue degradation, with parameters calibrated to match experimental data. The model is validated against experimental results for mode I and mixed-mode crack propagation, showing robustness and adaptability. The study highlights the potential of the PF-CZM approach for accurately simulating fatigue crack propagation in quasi-brittle materials under various loading conditions. The model is further extended to include plasticity and different fatigue hypotheses to improve its predictive capabilities for complex loading scenarios. The results demonstrate the model's effectiveness in capturing fatigue behavior, including the S-N curve, crack growth rate, and phase field crack propagation. The study concludes that the PF-CZM approach is a promising tool for simulating fatigue crack propagation in quasi-brittle materials.This paper presents a phase field cohesive zone model (PF-CZM) for simulating fatigue crack propagation in quasi-brittle materials, such as concrete. The PF-CZM extends the traditional cohesive zone method to account for fatigue-induced crack growth, incorporating fatigue degradation functions and experimental validation across various loading scenarios. The model is validated against experimental data for pre- and post-peak cyclic loading, low- and high-cycle fatigue, and mixed-mode crack propagation. The results demonstrate the model's ability to accurately capture fatigue crack propagation in concrete-like materials, with a focus on hysteretic behavior, S-N curves, fatigue creep curves, and the Paris law. The model is implemented in ABAQUS using a user material subroutine, and numerical simulations show good agreement with experimental results for monotonic, cyclic, and fatigue loading. The PF-CZM approach is extended to include fatigue degradation, with parameters calibrated to match experimental data. The model is validated against experimental results for mode I and mixed-mode crack propagation, showing robustness and adaptability. The study highlights the potential of the PF-CZM approach for accurately simulating fatigue crack propagation in quasi-brittle materials under various loading conditions. The model is further extended to include plasticity and different fatigue hypotheses to improve its predictive capabilities for complex loading scenarios. The results demonstrate the model's effectiveness in capturing fatigue behavior, including the S-N curve, crack growth rate, and phase field crack propagation. The study concludes that the PF-CZM approach is a promising tool for simulating fatigue crack propagation in quasi-brittle materials.
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