Enhanced THM coupling for anisotropic geomaterials and smoothed-FEM simulation

IF 7.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences Pub Date : 2025-03-01 DOI:10.1016/j.ijmecsci.2025.110087

Xian-Han Wu , Qi Zhang , Wei-Qiang Feng , Zhen-Yu Yin , Huangcheng Fang

{"title":"Enhanced THM coupling for anisotropic geomaterials and smoothed-FEM simulation","authors":"Xian-Han Wu , Qi Zhang , Wei-Qiang Feng , Zhen-Yu Yin , Huangcheng Fang","doi":"10.1016/j.ijmecsci.2025.110087","DOIUrl":null,"url":null,"abstract":"<div><div>As the thermo-hydro-mechanical (THM) coupling phenomenon becomes more and more common in various engineering applications, a deeper understanding of the behavior of the porous media under combined “THM loading” would be extremely useful. As researchers in computational geomechanics, we first revisit the established poromechanics theory and then move one step forward to (1) derive a generalized fluid flow equation that incorporates both mechanical and thermal strain anisotropy; and to (2) propose an analogous poro-elasto-plastic structural heating/cooling term that bridges not only to the phenomenological porothermoelasticity but also to the uncoupled standard thermal equation. Next in the section of the numerical method, we enrich the stabilized node-based smoothed finite element method (SNS-FEM) to incorporate THM coupling, which leads to the development of smoothed nodal thermal strain and smoothed thermal strain gradient. Subsequently, the proposed numerical framework is verified against three benchmark tests, which aim for the correct implementation of heat convection and THM contact, as well as the comparison with FEM. Finally, two hypothetical model application examples are presented, which investigate the effect of mechanical anisotropy and cross-coupling in THM biaxial test and the effect of temperature in pipeline penetration, respectively. Overall, this study offers a promising contribution to the understanding and modeling of THM problems.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"290 ","pages":"Article 110087"},"PeriodicalIF":7.1000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Mechanical Sciences","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0020740325001730","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

Abstract

As the thermo-hydro-mechanical (THM) coupling phenomenon becomes more and more common in various engineering applications, a deeper understanding of the behavior of the porous media under combined “THM loading” would be extremely useful. As researchers in computational geomechanics, we first revisit the established poromechanics theory and then move one step forward to (1) derive a generalized fluid flow equation that incorporates both mechanical and thermal strain anisotropy; and to (2) propose an analogous poro-elasto-plastic structural heating/cooling term that bridges not only to the phenomenological porothermoelasticity but also to the uncoupled standard thermal equation. Next in the section of the numerical method, we enrich the stabilized node-based smoothed finite element method (SNS-FEM) to incorporate THM coupling, which leads to the development of smoothed nodal thermal strain and smoothed thermal strain gradient. Subsequently, the proposed numerical framework is verified against three benchmark tests, which aim for the correct implementation of heat convection and THM contact, as well as the comparison with FEM. Finally, two hypothetical model application examples are presented, which investigate the effect of mechanical anisotropy and cross-coupling in THM biaxial test and the effect of temperature in pipeline penetration, respectively. Overall, this study offers a promising contribution to the understanding and modeling of THM problems.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Mechanical Sciences 工程技术-工程：机械

CiteScore

12.80

自引率

17.80%

发文量

769

审稿时长

19 days

期刊介绍： The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering. The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture). Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content. In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.