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Multiscale, Multifield, and Continuum-Discontinuum Analysis in Geomechanics

Submission Deadline: 31 December 2024 View: 198 Submit to Special Issue

Guest Editors

Prof. Haitao Yu, Tongji University, China
Dr. Eva Binder, Linnaeus University, Sweden
Prof. Qiushi Chen, Clemson University, USA
Prof. Hui Wang, Shanghai Jiaotong University, China
Dr. Xizhuo Chen, Tongji University, China

Summary

Geomaterials, such as rock, soil, concrete, and timber are consisted of constituents, characterized by multiple length scales. Response and interaction of these constituents determines the macroscopic performance of these materials and the related structures. The latter are inevitably subjected to multifield effects, e.g. in terms of mechanical loading, temperature and moisture changes, and chemical reactions. These effects can lead to stresses and even micro-/macro-cracking, addressing the need of discontinuum analysis, apart from the continuum analysis. Therefore, this special issue is intended to provide a forum to present recent advances in geomechanical research, involving the aforementioned multiscale, multifield, and continuum-discontinuum analyses.


Topics within the scope of interests include, but not limited to, the following aspects:

  • Multiscale modeling of geomaterials and the related structures, (i.e. concurrent/hierarchical modeling, domain decomposition, discrete/continuum coupling…);

  • Advanced computing and simulation methods (hybrid physics & data, artificial intelligent, automation, probabilistic and statistical approaches, wavelet signal processing);

  • Continuum and discontinuum modeling of soils, rocks, timber, and concretes;

  • Advanced numerical methods or algorithms in soil-structure interactions;

  • Multi-physical couplings between mechanical, hydraulic, hygroscopic, thermal processes, and chemical kinetics;

  • Large-scale modeling and high-performance computing of geomaterials in underground structures.


Cross-disciplinary contributions are particularly welcomed.


Keywords

Geomaterials; Multiscale; Multifield; Continuum-Discontinuum

Published Papers


  • Open Access

    ARTICLE

    Influence of High-Density Bedding Plane Characteristics on Hydraulic Fracture Propagation in Shale Oil Reservoir

    Xiao Yan, Di Wang, Haitao Yu
    CMES-Computer Modeling in Engineering & Sciences, DOI:10.32604/cmes.2024.051832
    (This article belongs to the Special Issue: Multiscale, Multifield, and Continuum-Discontinuum Analysis in Geomechanics )
    Abstract The existence of high-density bedding planes is a typical characteristic of shale oil reservoirs. Understanding the behavior of hydraulic fracturing in high-density laminated rocks is significant for promoting shale oil production. In this study, a hydraulic fracturing model considering tensile failure and frictional slip of the bedding planes is established within the framework of the unified pipe-interface element method (UP-IEM). The model developed for simulating the interaction between the hydraulic fracture and the bedding plane is validated by comparison with experimental results. The hydraulic fracturing patterns in sealed and unsealed bedding planes are compared. Additionally,… More >

  • Open Access

    ARTICLE

    FDSC-YOLOv8: Advancements in Automated Crack Identification for Enhanced Safety in Underground Engineering

    Rui Wang, Zhihui Liu, Hongdi Liu, Baozhong Su, Chuanyi Ma
    CMES-Computer Modeling in Engineering & Sciences, DOI:10.32604/cmes.2024.050806
    (This article belongs to the Special Issue: Multiscale, Multifield, and Continuum-Discontinuum Analysis in Geomechanics )
    Abstract In underground engineering, the detection of structural cracks on tunnel surfaces stands as a pivotal task in ensuring the health and reliability of tunnel structures. However, the dim and dusty environment inherent to underground engineering poses considerable challenges to crack segmentation. This paper proposes a crack segmentation algorithm termed as Focused Detection for Subsurface Cracks YOLOv8 (FDSC-YOLOv8) specifically designed for underground engineering structural surfaces. Firstly, to improve the extraction of multi-layer convolutional features, the fixed convolutional module is replaced with a deformable convolutional module. Secondly, the model’s receptive field is enhanced by introducing a multi-branch More >

  • Open Access

    ARTICLE

    Numerical Analysis of Perforation during Hydraulic Fracture Initiation Based on Continuous–Discontinuous Element Method

    Rui Zhang, Lixiang Wang, Jing Li, Chun Feng, Yiming Zhang
    CMES-Computer Modeling in Engineering & Sciences, Vol.140, No.2, pp. 2103-2129, 2024, DOI:10.32604/cmes.2024.049885
    (This article belongs to the Special Issue: Multiscale, Multifield, and Continuum-Discontinuum Analysis in Geomechanics )
    Abstract Perforation is a pivotal technique employed to establish main flow channels within the reservoir formation at the outset of hydraulic fracturing operations. Optimizing perforation designs is critical for augmenting the efficacy of hydraulic fracturing and boosting oil or gas production. In this study, we employ a hybrid finite-discrete element method, known as the continuous–discontinuous element method (CDEM), to simulate the initiation of post-perforation hydraulic fractures and to derive enhanced design parameters. The model incorporates the four most prevalent perforation geometries, as delineated in an engineering technical report. Real-world perforations deviate from the ideal cylindrical shape, More >

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