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Jukić, K Ambati, M Jarak, Tomislav Kästner, M Tonković, Zdenko 2023-05-26T07:53:24Z 2023-05-26T07:53:24Z 2023 Engineering Fracture Mechanics, 2023, vol. 289, 109341 0013-7944 https://uvadoc.uva.es/handle/10324/59697 10.1016/j.engfracmech.2023.109341 109341 Engineering Fracture Mechanics Producción Científica A new general multiparameter phase-field approach for high-cycle fatigue fracture is proposed. Fatigue is modelled by adding a new energy dissipation term accounting for fatigue phenomena, which results in two additional crack driving forces. The current model analysed in the paper possesses four fatigue parameters, whereby each of the driving forces depends on two parameters. The crack driving forces are designed so as to enable a more accurate reproduction of S-N curves and the Paris’ law by a single set of identified parameters, which is not possible by simpler phase-field models relying on only one or two fatigue parameters. The results indicate that the presented model is able to capture various macroscopic phenomena, including the mean stress effect, the evolution of complex crack patterns under cyclic loading and the reproduction of experimental S-N and Paris curves of realistic materials. Extensive parametric analyses have revealed that there exists a strong correlation between the model fatigue parameters and the parameters defining S-N and Paris’ curves, which opens the possibility of straightforward calibration of each parameter from experimental data. UE-FEDER project “Protection of Structural Integrity in Energy and Transport” (Zacjel, KK.01.1.1.04.0056) application/pdf eng Elsevier info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ © 2023 The Authors Atribución 4.0 Internacional Structural Materials Estructuras, Teoría de Phase-field Fatigue Calibration Crack-driving forces Campo de fase Fatiga Calibración Fuerzas impulsoras de grietas 3305.32 Ingeniería de Estructuras 3313 Tecnología E Ingeniería Mecánicas Calibration of phase-field brittle fatigue model by purposeful design of crack driving forces info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0013794423002990?via%3Dihub SI