Abstract
Phase field fracture models have seen widespread application in the last
decade. Among these applications, its use to model the evolution of
fatigue cracks has attracted particular interest, as fatigue damage
behaviour can be predicted for arbitrary loading histories, dimensions
and complexity of the cracking phenomena at play. However, while
cycle-by-cycle calculations are remarkably flexible, they are also
computationally expensive, hindering the applicability of phase field
fatigue models for technologically-relevant problems. In this work, a
computational framework for accelerating phase field fatigue
calculations is presented. Two novel acceleration strategies are
proposed, which can be used in tandem and together with other existing
acceleration schemes from the literature. The computational performance
of the proposed methods is documented through a series of 2D and 3D
boundary value problems, highlighting the robustness and efficiency of
the framework even in complex fatigue problems. The observed reduction
in computation time using both of the proposed methods in tandem is
shown to reach a speed-up factor of 32, with a scaling trend enabling
even greater reductions in problems with more load cycles.
Original language | English |
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Article number | 104991 |
Journal | European Journal of Mechanics A - Solids |
Volume | 100 |
Number of pages | 11 |
ISSN | 0997-7538 |
DOIs | |
Publication status | Published - 2023 |
Keywords
- Fatigue
- Finite element analysis
- Fracture mechanics
- Phase field fracture