Phase field modeling for fatigue fracture in functional graded materials

A phase field modeling framework for fatigue fracture was proposed in functionally graded materials (FGMs). This framework is constructed based on homogenization theory and takes into consideration the spatial variation of effective properties, critical energy release rate, and fatigue degradation f...

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Bibliographic Details
Published in:Acta mechanica 2024-08, Vol.235 (8), p.5239-5255
Main Authors: Wang, Zhi-Hai, Chen, Yu-Luan, Yan, Shi, Song, Xiao-Jin
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Control
Crack propagation
Cyclic loads
Degradation
Dynamical Systems
Energy
Energy release rate
Engineering
Engineering Fluid Dynamics
Engineering Thermodynamics
Fatigue cracks
Fatigue failure
Finite element analysis
Functionally gradient materials
Heat and Mass Transfer
Load
Modelling
Original Paper
Propagation
Quasi Newton methods
Solid Mechanics
Theoretical and Applied Mechanics
Variables
Vibration
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Description
Summary:A phase field modeling framework for fatigue fracture was proposed in functionally graded materials (FGMs). This framework is constructed based on homogenization theory and takes into consideration the spatial variation of effective properties, critical energy release rate, and fatigue degradation function. Several exemplary cases are shown according to the model to prove the capabilities of the presented framework. These cases present fatigue crack propagation and crack length variation, and the influences of cyclic load, the nonhomogeneous and geometric parameters on crack propagation and crack length. The framework enables capture fatigue crack propagation in FGMs under cyclic loading and considering the spatial variation of effective properties, critical energy release rate, and fatigue degradation function. Furthermore, a monolithic scheme applying the quasi-Newton method to address the issue of fatigue fracture in FGMs is proposes.
ISSN:0001-5970
1619-6937
DOI:10.1007/s00707-024-03977-0