【Key words】 concrete; fracture process; numerical simulation; mesoscopic level
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In the paper, concrete is taken as three phases composites consisting of aggregate matrix and bond between matrix and aggregate on meso-level.
本文从细观层次上分析了混凝土的内部结构，把混凝土看作是由粗骨料、硬化水泥砂浆及两者之间的过渡层组成的非均匀三相复合材料。
参考来源 - 混凝土材料破坏过程的细观数值模拟In order to reflect the heterogeneity of concrete at mesoscopic level, the concrete is firstly assumed to be a two-phase composite composed of matrix, aggregate, holes, and cracks. Then a random aggregate numerical model is constructed with Monte Carlo method.
为了反映材料细观层次上的非均匀性,本文假设混凝土是由砂浆为基相,粗集料、孔、裂缝为分散相的一级二相复合材料,运用蒙特卡洛方法,建立了随机集料数值模型,并采用有限元法的思想,利用Delaunay三角网进行单元网格自动剖分。
参考来源 - 混凝土细观结构的数值模拟Concrete is a composite material with a three-phase of inhomogeneities in mesoscopic level. It is consisting of coarse aggregate mortar matrix and interfacial zones between the coarse aggregate and the mortar matrix.
在细观层次上，混凝土被视为由粗骨料、水泥砂浆基体及二者间的粘结带组成三相非均质复合材料。
参考来源 - 混凝土细观力学分析与实验模拟·2,447,543篇论文数据，部分数据来源于NoteExpress
细观层次上的材料行为对于材料的宏观行为起着关键的作用。
The behavior of materials at mesoscopic level is key to the macroscopic behavior.
固体的不可逆形变和断裂与一类过程相关，在此过程中宏观效应是细观层次行为起着支配作用。
The irreversible deformation and fracture of solids may be related to a class of processes in which the macroscopic effects are predominated by mesoscopic level behavior.
通过数值模拟结果之间的对比分析，揭示出岩石试样宏观破坏模式随细观层次上韦伯分布参数的变化而不同。
It has been revealed by the comparison of numerical simulation results that the macro-failure modes of rock samples are different according to parameters of Weibull distribution at mesoscale level.
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