Earlier Lectures (2021)

Phase field fatigue fracture (Lecture 15 - Jan 2021)

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.

Related publications

1. 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).
2. 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).
3. F.; Schreiber, C.; Müller, Aldakheel, F.: Phase Field Modeling of Fatigue Fracture. A part of a new Book submitted to Springer (2021).
4. Wriggers, P.; Aldakheel, F.; Lohaus, L.; Heist, M.: Water-induced damage mechanisms of cyclically loaded High-performance concretes. Bauingenieur 95 (4), 126–132 (2020).