Numerical Study on the Fracture Trajectories and Mechanisms of Hole-Contained Brazilian Discs: The Role of Size Effects and Arrangements

IF 3.2 2区材料科学 Q2 ENGINEERING, MECHANICAL

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-22 DOI:10.1111/ffe.70030

Yu Fu, Dalang Tian, Guangjian Liu, Faquan Wu

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Abstract

This study mostly investigates the effects of the sizes of a single hole and the arrangements of multiple holes on the cracking characteristics of rock-like materials (concrete) under compressive loading based on the extended Non-ordinary state-based peridynamics (NOSBPD) model. The radius sizes of pre-existing single holes overtly affect the fracture trajectories of Brazilian discs. The critical value of the radius of the pre-existing hole can be ascertained to identify the transition of fracture trajectories for single hole-contained Brazilian discs. The numbers and arrangements of pre-existing multiple holes overtly affect the fracture trajectories of Brazilian discs. The extended NOSBPD model can unfailingly predict the breakage trajectories of single and multiple contained holes Brazilian discs. The distribution characteristics of stress fields can analyze the fracture mechanism of flawed Brazilian discs. The stress concentration, the stress concentration transfer, and the stress concentration dissipation can clarify the initiation, growth, and stop of new cracks, respectively.

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含孔巴西盘断裂轨迹和机理的数值研究：尺寸效应和布置的作用

本研究基于扩展的非普通状态周动力学（NOSBPD）模型，主要研究了单孔尺寸和多孔布置对类岩材料（混凝土）在压缩荷载作用下开裂特性的影响。现有单孔的半径大小明显影响巴西盘的断裂轨迹。可以确定现有井眼半径的临界值，以识别单孔巴西盘的裂缝轨迹转变。预先存在的多个孔的数量和排列明显影响巴西盘的断裂轨迹。扩展的NOSBPD模型能够准确预测单孔和多孔巴西盘的断裂轨迹。应力场的分布特征可以分析有缺陷巴西盘的断裂机制。应力集中、应力集中转移和应力集中消散分别能说明新裂纹的萌生、扩展和停止。

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

Fatigue & Fracture of Engineering Materials & Structures 工程技术-材料科学：综合

CiteScore

6.30

自引率

18.90%

发文量

256

审稿时长

4 months

期刊介绍： Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.