Abstract

The article contains an analysis of the kinetics of brittle fracture processes during compression of a two-scale porous medium, in which a larger scale is associated with a system of holes. This work is a continuation of studies of fracture structures during compression. Within the framework of the project, experiments were carried out on samples of porous brittle model material (gypsum) containing a number of holes of different orientations with respect to the compression axis. They showed that fracture in the vicinity of holes in such materials under compression can develop both by initiating normal fracture cracks and by localizing compaction. In a model situation with a system of holes, the choice of the mechanism for the formation of local foci of destruction depends on the orientation of the system of holes relative to the compression axis. To interpret the experimental results, the stress state of the loaded system was calculated. A brief overview of the effects of local compaction under compression is given.

中文翻译：

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二维多孔介质压缩过程中有序断裂的建模

摘要

本文包含对两尺度多孔介质压缩过程中脆性断裂过程动力学的分析，其中较大尺度与孔洞系统有关。这项工作是对压缩过程中断裂结构研究的延续。在该项目的框架内，对多孔脆性模型材料（石膏）的样本进行了实验，该样本包含相对于压缩轴方向不同的多个孔。他们表明，这种材料在受压状态下，孔附近的断裂既可以通过引发正常的断裂裂纹，也可以通过局部压实而发展。在具有孔系统的模型情况下，形成局部破坏焦点的机制的选择取决于孔系统相对于压缩轴的方向。为了解释实验结果，计算了加载系统的应力状态。简要概述了压缩下的局部压实效果。