Hydro-mechanical network modelling of particulate composites
Hydro-mechanical network modelling of particulate composites
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颗粒复合材料的流体力学网络建模
DOI：
10.1016/j.ijsolstr.2017.10.017
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发表时间：
2018
影响因子：
3.6
通讯作者：
Athanasiadis I
中科院分区：
文献类型：
--
作者：
Athanasiadis I
颗粒状准脆性材料的差异收缩会导致微裂纹，从而通过增加材料的质量传递特性来降低材料的耐久性。采用流体力学三维周期网络方法研究了颗粒和试样尺寸对试样渗透性的影响。本文研究的颗粒准脆性材料由刚性弹性颗粒、较软的基体和具有非线性材料响应的基体与颗粒之间的界面过渡区组成。采用增量均匀本征应变和损伤塑性本构模型来描述基体和界面过渡区的收缩和开裂过程。结果表明，在体积分数不变的情况下，增加颗粒直径会增加裂缝宽度，从而增加渗透率，这证实了之前得到的二维模型结果。此外，试样厚度对微裂纹渗透率增加的影响较小，粒径对微裂纹渗透率增加的影响较小。
Differential shrinkage in particulate quasi-brittle materials causes microcracking which reduces durability in these materials by increasing their mass transport properties. A hydro-mechanical three-dimensional periodic network approach was used to investigate the influence of particle and specimen size on the specimen permeability. The particulate quasi-brittle materials studied here consist of stiff elastic particles, and a softer matrix and interfacial transition zones between matrix and particles exhibiting nonlinear material responses. An incrementally applied uniform eigenstrain, along with a damage-plasticity constitutive model, are used to describe the shrinkage and cracking processes of the matrix and interfacial transition zones. The results showed that increasing particle diameter at constant volume fraction increases the crack widths and, therefore, permeability, which confirms previously obtained 2D modelling results. Furthermore, it was demonstrated that specimen thickness has, in comparison to the influence of particle size, a small influence on permeability increase due to microcracking.
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影响因子：
11.4
作者：
Grassl, Peter;Wong, Hong S.;Buenfeld, Nick R.
通讯作者：
Buenfeld, Nick R.
离散模型中的渐进损伤及其对连续介质建模的影响
DOI：
--
发表时间：
1996
期刊：
影响因子：
--
作者：
A. Delaplace;G. Pijaudier;S. Roux
通讯作者：
S. Roux
界面过渡区和微裂纹对水泥基材料干燥后扩散性、渗透性和吸着性的影响
影响因子：
2.7
作者：
Wong H
通讯作者：
Wong H
影响因子：
11.4
作者：
Idiart, Andres;Bisschop, Jan;Lura, Pietro
通讯作者：
Lura, Pietro