Accelerated high-cycle phase field fatigue predictions

Phase field fracture models have seen widespread application in the last decade. Among these applications, its use to model evolution of fatigue cracks has attracted particular interest, as damage behaviour can be predicted for arbitrary loading histories, dimensions and complexity cracking phenomena at play. However, while cycle-by-cycle calculations are remarkably flexible, they also computationally expensive, hindering applicability phase technologically-relevant problems. In this work, a computational framework accelerating is presented. Two novel acceleration strategies proposed, which used tandem together with other existing schemes from literature. The performance proposed methods documented through series 2D 3D boundary value problems, highlighting robustness efficiency even complex observed reduction computation time using both shown reach speed-up factor 32, scaling trend enabling greater reductions problems more load cycles.