Abstract
In this paper, we develop a Virtual Clustering Analysis method for a phase field model of brittle fracture. In addition to the strain/stress field, we treat the phase field variable via clusters as well, based on Green’s function of the governing Helmholtz equation. Around the crack path, we assign one cluster per cell. We detect the crack tip and recluster accordingly as the crack propagates. Three examples are presented to demonstrate the numerical efficiency of the proposed method, including either straight or curved crack, under tension or shear.
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Acknowledgements
This work is supported by National Key R &D Program of China under Grant Number 2023YFA1008901, and National Natural Science Foundation of China under Grant Numbers 11832001 and 11988102.
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Formulation of damaged modulus
Formulation of damaged modulus
Here \(\tilde{H}(\cdot )\) is the Heaviside function and \(\theta _{ab}\) is defined as
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Tang, S., Miao, J. Virtual clustering analysis for phase field model of quasi-static brittle fracture. Comput Mech (2024). https://doi.org/10.1007/s00466-024-02459-3
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DOI: https://doi.org/10.1007/s00466-024-02459-3