PSI - Issue 68

I. Yucel et al. / Procedia Structural Integrity 68 (2025) 1287–1293 Yucel et al. / Procedia Structural Integrity 00 (2024) 000–000

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lates the experimental outcomes regardless of mesh size. The di ff erences between the models are more pronounced for the ISS specimen than for the PST specimen, likely due to the ISS specimen’s geometry resulting in complicated stress states. Several parameters of the suggested model were varied to evaluate their e ff ects on the load-displacement response. It is concluded that fracture toughness and length scale parameters alter the hardening curve, while plas tic capacity influences the displacement and force values where failure initiates. The PF model for ductile fracture presented in this work provides a robust framework for non-local failure simulations.

Acknowledgements

Authors gratefully acknowledge the support by Repkon Machine and Tool Industry and Trade Inc., Tu¨rkiye.

References

Ambati, M., Gerasimov, T., De Lorenzis, L., 2015. Phase-field modeling of ductile fracture. Computational Mechanics 55, 1017–1040. Besson, J., Steglich, D., Brocks, W., 2001. Modeling of crack growth in round bars and plane strain specimens. International Journal of Solids and Structures 38, 8259–8284. Borden, M.J., Hughes, T.J., Landis, C.M., Anvari, A., Lee, I.J., 2016. A phase-field formulation for fracture in ductile materials: Finite deformation balance law derivation, plastic degradation, and stress triaxiality e ff ects. Computer Methods in Applied Mechanics and Engineering 312, 130–166. Phase Field Approaches to Fracture. Borden, M.J., Verhoosel, C.V., Scott, M.A., Hughes, T.J., Landis, C.M., 2012. A phase-field description of dynamic brittle fracture. Computer Methods in Applied Mechanics and Engineering 217-220, 77–95. Carrara, P., Ambati, M., Alessi, R., De Lorenzis, L., 2020. A framework to model the fatigue behavior of brittle materials based on a variational phase-field approach. Computer Methods in Applied Mechanics and Engineering 361, 112731. Cui, C., Bortot, P., Ortolani, M., Mart´ınez-Pan˜eda, E., 2024. Computational predictions of hydrogen-assisted fatigue crack growth. International Journal of Hydrogen Energy 72, 315–325. Cui, C., Ma, R., Mart´ınez-Pan˜eda, E., 2021. A phase field formulation for dissolution-driven stress corrosion cracking. Journal of the Mechanics and Physics of Solids 147, 104254. Erdogan, C., Vural, H., Karakas¸, A., Fenerciog˘lu, T.O., Yalc¸inkaya, T., 2023. Ductile failure of Inconel 718 during flow forming process and its numerical investigation. Engineering Failure Analysis 152, 107424. Geers, M., de Borst, R., Brekelmans, W., Peerlings, R., 1998. Strain-based transient-gradient damage model for failure analyses. Computer Methods in Applied Mechanics and Engineering 160, 133–153. Huespe, A., Needleman, A., Oliver, J., Sa´nchez, P., 2009. A finite thickness band method for ductile fracture analysis. International Journal of Plasticity 25, 2349–2365. Li, C., Fang, J., Wu, C., Sun, G., Steven, G., Li, Q., 2022. Phase field fracture in elasto-plastic solids: Incorporating phenomenological failure criteria for ductile materials. Computer Methods in Applied Mechanics and Engineering 391, 114580. Navidtehrani, Y., Betego´n, C., Mart´ınez-Pan˜eda, E., 2021. A simple and robust abaqus implementation of the phase field fracture method. Appli cations in Engineering Science 6, 100050. Pijaudier-Cabot, G., Bazˇant, Z.P., 1987. Nonlocal damage theory. Journal of Engineering Mechanics 113, 1512–1533. Tuhami, A.E.O., Feld-Payet, S., Quilici, S., Osipov, N., Besson, J., 2022. A two characteristic length nonlocal GTN model: Application to cup–cone and slant fracture. Mechanics of Materials 171, 104350. Waseem, S., Erdogan, C., Yalc¸inkaya, T., 2024. Phase field modeling of fatigue crack growth retardation under single cycle overloads. International Journal of Fatigue 179, 108064. Waseem, S., Erdog˘an, C., Yalc¸ınkaya, T., 2023. Phase field modeling of ductile fracture and application in metal forming. Materials Research Proceedings 28, 1593–1602.