A study on hole size effects and failure mode of brittle materials containing multiple holes

DUAN Jin-chao; TANG Chun-an; CHANG Xu

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A study on hole size effects and failure mode of brittle materials containing multiple holes

更新时间：2026-06-25

- A study on hole size effects and failure mode of brittle materials containing multiple holes
- Vol. 28, Issue 3, (2007)
- 作者机构：
  
  1. 东北大学岩石破裂与失稳研究中心,沈阳,110004
  2. 大连理工大学土木水利学院,大连,116024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU502
- Online First：28 August 2013，
  
  Published：2007
- 稿件说明：
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DUAN Jin-chao, TANG Chun-an, CHANG Xu. A study on hole size effects and failure mode of brittle materials containing multiple holes[J]. 2007, 28(3).
DOI：

DUAN Jin-chao, TANG Chun-an, CHANG Xu. A study on hole size effects and failure mode of brittle materials containing multiple holes[J]. 2007, 28(3). DOI：

摘要

运用材料真实破坏过程分析系统RFPA2D，对含多孔的脆性材料进行单轴加载情况下的破坏机制以及孔洞的尺寸效应研究。其中的数值模型具有同样的尺寸（高宽= 65 mm 100 mm）、同样的孔洞分布类型、同样的孔隙率（20 %）、不同的孔洞直径。数值计算的结果显示，各种孔径的模型具有近似的抗压强度，并且可以观察到没有裂纹局部化的拉破坏模式。结果表明，含孔脆性材料的近似脆性行为并没有引起材料的尺寸效应。

Abstract

A numerical analysis has been conducted to study hole size effects and failure mechanism of brittle materials containing multiple holes under uniaxial compression loading

by using the Realistic failure process analysis code (RFPA2D). Numerical model specimens with same sizes(height width = 65 mm 100 mm)

same periodic holes patterns

same void fraction (20 %) and different diameters holes have been numerically analyzed. The numerical calculation results show that the similar compressive strengths for the specimens are obtained. Moreover

a specimen tensile failure mode with no cracks localization has been observed

which allows us to conclude that there is no size effect engendered by the quasibrittle behavior of the considered brittle materials containing multiple holes.

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