A linear fracture constitutive model for the two-dimensional finite-discrete element method (FDEM) and its parameters calibration procedure

IF 4.2 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Engineering Analysis with Boundary Elements Pub Date : 2025-04-04 DOI:10.1016/j.enganabound.2025.106228

Chengzeng Yan , Du Han , Hong Zheng , Tie Wang , Sajid Ali

{"title":"A linear fracture constitutive model for the two-dimensional finite-discrete element method (FDEM) and its parameters calibration procedure","authors":"Chengzeng Yan , Du Han , Hong Zheng , Tie Wang , Sajid Ali","doi":"10.1016/j.enganabound.2025.106228","DOIUrl":null,"url":null,"abstract":"<div><div>The parameters calibration of the original fracture constitutive model for the joint element in the finite-discrete element method (FDEM) is very complex. To simplify the parameter calibration procedure, we firstly propose a linear fracture constitutive model for the two-dimensional finite-discrete element method (FDEM). Based on the simplified constitutive model for the joint element, the proposed calibration procedure only involves adjusting two parameters (<em>r<sub>o</sub></em> and <em>r<sub>s</sub></em>), which represent the post-peak strain to pre-peak strain ratio and have a clear physical meaning. Other rock mechanical parameters can directly take from the experimental values. Then, the correctness of the proposed fracture constitutive model is verified by a series of rock numerical tests. Finally, the calibration procedure of the input parameters for the Jinping Baishan Group marble is provided by using the linear fracture constitutive model. The proposed constitutive model can significantly simplify the parameter calibration process and improve the computational efficiency, which enables FDEM better applied to practical engineering.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"176 ","pages":"Article 106228"},"PeriodicalIF":4.2000,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Engineering Analysis with Boundary Elements","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S095579972500116X","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The parameters calibration of the original fracture constitutive model for the joint element in the finite-discrete element method (FDEM) is very complex. To simplify the parameter calibration procedure, we firstly propose a linear fracture constitutive model for the two-dimensional finite-discrete element method (FDEM). Based on the simplified constitutive model for the joint element, the proposed calibration procedure only involves adjusting two parameters (r_o and r_s), which represent the post-peak strain to pre-peak strain ratio and have a clear physical meaning. Other rock mechanical parameters can directly take from the experimental values. Then, the correctness of the proposed fracture constitutive model is verified by a series of rock numerical tests. Finally, the calibration procedure of the input parameters for the Jinping Baishan Group marble is provided by using the linear fracture constitutive model. The proposed constitutive model can significantly simplify the parameter calibration process and improve the computational efficiency, which enables FDEM better applied to practical engineering.

查看原文本刊更多论文

二维有限离散元法（FDEM）的线性断裂本构模型及其参数标定程序

有限-离散元法（FDEM）中节点单元原始断裂本构模型的参数校正非常复杂。为了简化参数标定过程，首先提出了二维有限离散元法（FDEM）的线性断裂本构模型。该方法基于简化的节点单元本构模型，只需要调整两个参数（ro和rs），这两个参数代表峰后应变与峰前应变之比，具有明确的物理意义。其他岩石力学参数可直接取实验值。然后，通过一系列岩石数值试验验证了所提断裂本构模型的正确性。所提出的本构模型能显著简化参数标定过程，提高计算效率，使FDEM能更好地应用于实际工程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Engineering Analysis with Boundary Elements 工程技术-工程：综合

CiteScore

5.50

自引率

18.20%

发文量

368

审稿时长

56 days

期刊介绍： This journal is specifically dedicated to the dissemination of the latest developments of new engineering analysis techniques using boundary elements and other mesh reduction methods. Boundary element (BEM) and mesh reduction methods (MRM) are very active areas of research with the techniques being applied to solve increasingly complex problems. The journal stresses the importance of these applications as well as their computational aspects, reliability and robustness. The main criteria for publication will be the originality of the work being reported, its potential usefulness and applications of the methods to new fields. In addition to regular issues, the journal publishes a series of special issues dealing with specific areas of current research. The journal has, for many years, provided a channel of communication between academics and industrial researchers working in mesh reduction methods Fields Covered: • Boundary Element Methods (BEM) • Mesh Reduction Methods (MRM) • Meshless Methods • Integral Equations • Applications of BEM/MRM in Engineering • Numerical Methods related to BEM/MRM • Computational Techniques • Combination of Different Methods • Advanced Formulations.