Coupling of phase field and viscoplasticity for modelling cyclic softening and crack growth under fatigue
J. Song,J. Song,Liguo Zhao,H. Qi,S. Li,Duoqi Shi,J. Huang,J. Huang,Y. Su,Y. Su,K. Zhang,K. Zhang +11 more
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TLDR
In this article, a coupled phase field-viscoplasticity approach was developed to model the deformation and crack growth in a nickel-based superalloy under fatigue.Abstract:
A coupled phase field-viscoplasticity approach was developed to model the deformation and crack growth in a nickel-based superalloy under fatigue. The coupled model has an advantage in predicting the cyclic softening behavior of the alloy caused by fatigue damage, overcoming a major limitation of the original cyclic viscoplasticity model. The coupled approach is also highly effective in predicting fatigue crack propagation under varied dwell times at peak load, an important behavior for crack growth under dwell fatigue. By incorporating the stress state factor, the coupled model is further utilized to investigate the growth behavior of 3D cracks under fatigue. Both the geometrical feature of the 3D crack front and the overall crack growth rate are well captured, confirming the predicative capability of the coupled model.read more
Citations
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Accelerated high-cycle phase field fatigue predictions
TL;DR: In this paper , a computational framework for accelerating phase field fatigue calculations is presented, which can be used in tandem and together with other existing acceleration schemes from the literature, highlighting the robustness and efficiency of the framework even in complex fatigue problems.
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Viscoplastic constitutive model considering strain rate sensitivity under multiaxial thermomechanical fatigue loading
Dao-Hang Li,De-Guang Shang,Hong Long Chen,Ling-Hua Cong,Jin-Jie Wang,Zheng-Yu Mao,Chao Lin Chen,Yingzi Guo,Xiang Yin +8 more
TL;DR: In this paper , a viscoplastic constitutive model considering strain rate sensitivity under multiaxial thermomechanical fatigue loading is proposed, which can describe the varying influence of strain-rate sensitivity on cyclic mechanical behavior.
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A phase field approach to fracture for hyperelastic and visco-hyperelastic materials applied to pre-stressed cylindrical structures
TL;DR: In this paper , a nonlinear visco-hyperelastic residually stressed materials obtained from an invariant-based constitutive energy framework is coupled with the phase field approach to fracture.
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Applications of Phase Field Methods in Modeling Fatigue Fracture and Performance Improvement Strategies: A Review
Haitao Cui,Hongjian Zhang +1 more
TL;DR: In this article , the phase field fracture principle is introduced, and a review of recent advances in phase field methods for fatigue fracture modeling is given. And some strategies to improve the performance of phase field models are summarized from different perspectives.
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A review on phase field models for fracture and fatigue
TL;DR: In this paper , the authors provide a comprehensive review of recent work on phase field models for fatigue damage and failures, including basic theories, formulas, tension-compression splits, and numerical implementations.
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