Speaker: Dr. Fadi Aldakheel
Abstract of the lecture
In this webinar, the phase-field PF approach to fracture is extended to model fatigue failure in the high and low cyclic regime. Fatigue is the primary failure mode for more than 90 % of mechanical failures. It occurs when a structure is subjected to repeated loading at stress levels that are below the yield stress of the material. On the modeling side, a local energy accumulation variable which takes the loading history of a structure into account is introduced within the PF formulation. This is inserted into a fatigue degradation function which degrades the fracture material properties. To this end, only one additional parameter is proposed, that enables the reproduction of main material fatigue features.
- Aldakheel, F.; Schreiber, C.; Müller, R.; Wriggers, P.: Phase-field modeling of fatigue crack propagation in brittle materials. A part of a new Book submitted to Springer (2021).
- Seles, K.; Aldakheel, F.; Tonković, Z.; Sorić, J.; Wriggers, P.: A General Phase-Field Model for Fatigue Failure in Brittle and Ductile Solids. Submitted to Computational Mechanics (minor-revision) (2021).
- F.; Schreiber, C.; Müller, Aldakheel, F.: Phase Field Modeling of Fatigue Fracture. A part of a new Book submitted to Springer (2021).
- Wriggers, P.; Aldakheel, F.; Lohaus, L.; Heist, M.: Water-induced damage mechanisms of cyclically loaded High-performance concretes. Bauingenieur 95 (4), 126–132 (2020).