A generalised framework for phase field-based modelling of coupled problems: Application to thermo-mechanical fracture, hydraulic fracture, hydrogen embrittlement and corrosion

IF 4.7 2区工程技术 Q1 MECHANICS

Engineering Fracture Mechanics Pub Date : 2025-07-10 DOI:10.1016/j.engfracmech.2025.111363

Yousef Navidtehrani , Covadonga Betegón , Emilio Martínez-Pañeda

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引用次数: 0

Abstract

We present a novel, generalised formulation to treat coupled structural integrity problems by combining phase field and multi-physics modelling. The approach exploits the versatility of the heat transfer equation and is therefore well suited to be adopted in commercial finite element packages, requiring only integration point-level implementation. This aspect is demonstrated here by implementing coupled, multi-variable phenomena through simple UMAT and UMATHT subroutines in the finite element package Abaqus. The generalised theoretical and computational framework presented is particularised to four problems of engineering and scientific relevance: thermo-mechanical fracture, hydraulic fracture, hydrogen-assisted cracking and metallic corrosion. 2D and 3D problems are considered. The results reveal a very good agreement with experimental data, and existing numerical and analytical solutions. The user subroutines developed are made freely available at https://mechmat.web.ox.ac.uk/codes.

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耦合问题相场建模的广义框架：在热机械断裂、水力断裂、氢脆和腐蚀中的应用

结合相场和多物理场建模，提出了一种新的、广义的处理耦合结构完整性问题的公式。该方法利用了传热方程的多功能性，因此非常适合在商业有限元软件包中采用，只需要集成点级实现。这里通过在有限元包Abaqus中通过简单的UMAT和UMATHT子程序实现耦合的多变量现象来演示这方面。提出的广义理论和计算框架特别针对工程和科学相关的四个问题：热机械断裂，水力断裂，氢辅助开裂和金属腐蚀。考虑了二维和三维问题。结果与实验数据、已有的数值解和解析解吻合得很好。开发的用户子程序可在https://mechmat.web.ox.ac.uk/codes上免费获得。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering Fracture Mechanics 物理-力学

CiteScore

8.70

自引率

13.00%

发文量

606

审稿时长

74 days

期刊介绍： EFM covers a broad range of topics in fracture mechanics to be of interest and use to both researchers and practitioners. Contributions are welcome which address the fracture behavior of conventional engineering material systems as well as newly emerging material systems. Contributions on developments in the areas of mechanics and materials science strongly related to fracture mechanics are also welcome. Papers on fatigue are welcome if they treat the fatigue process using the methods of fracture mechanics.