Field-enriched finite element method for numerical simulation of initiation, propagation and coalescence of multiple cracks

ZHOU Xiao-ping; JIA Zhi-ming

doi:10.11779/CJGE202206002

Volume 44 Issue 6

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Chinese Journal of Geotechnical Engineering > 2022 > 44(6): 988-996. > DOI: 10.11779/CJGE202206002

ZHOU Xiao-ping, JIA Zhi-ming. Field-enriched finite element method for numerical simulation of initiation, propagation and coalescence of multiple cracks[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(6): 988-996. DOI: 10.11779/CJGE202206002

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Field-enriched finite element method for numerical simulation of initiation, propagation and coalescence of multiple cracks

School of Civil Engineering, Chongqing University, Chongqing 400045, China

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Received Date: July 11, 2021
Available Online: September 22, 2022

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Abstract

Abstract

The study on the mechanical response and cracking behaviors of brittle rock materials with multiple cracks is of vital significance for the design and stability analysis of rock engineering structures. A field-enriched finite element method (FE-FEM) is proposed to study the evolution behaviors of multiple cracks in rock materials, including crack initiation, propagation and coalescence. The solutions to the crack coalescence problem during simulation are proposed. The field-enriched finite element method can directly deal with the complex multiple crack problem, while the extra enriched function needs to be introduced in the extended finite element method (XFEM). The analytical results of the present numerical examples demonstrate that the proposed numerical method has the capability to handle complex multiple crack propagation and coalescence.
- brittle rock material,
- field-enriched finite element method,
- crack propagation and coalescence,
- multiple cracks

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References

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