Numerical modelling of ellipsoidal inclusions
Numerical modelling of ellipsoidal inclusions
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DOI：
10.1016/j.conbuildmat.2018.01.160
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发表时间：
2018-04
影响因子：
7.4
通讯作者：
G. Mazzucco;B. Pomaro;V. Salomoni;C. Majorana
中科院分区：
文献类型：
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作者：
G. Mazzucco;B. Pomaro;V. Salomoni;C. Majorana
在颗粒材料三维随机填充的数值算法框架内，本工作提出了一种针对多分散椭球体颗粒的创新公式，包括用于优化模拟岩土材料（特别是混凝土）细观结构的重叠检测算法。因此，颗粒复合水泥基材料可以在粒度分布方面以足够的精度进行重建。具体而言，本文讨论了算法对假定的夹杂形状（椭球形或球形）和规则程度（圆形或不规则）的性能。在实际分级曲线上的算例证明了该方法的有效性。当适当地与可视化cad（计算机辅助设计）工具接口时，所提出的用于计算力学目的的方法的优点也被披露。
Within the framework of numerical algorithms for the three-dimensional random packing of granular materials this work presents an innovative formulation for polydispersed ellipsoidal particles, including an overlapping detection algorithm for an optimized simulation of the mesostructure of geomaterials, particularly concrete.Granular composite cement-based materials can be so reconstructed with adequate precision in terms of grain size distribution. Specifically, the algorithm performance towards the assumed inclusion shape (ellipsoidal or spherical) and degree of regularity (round or irregular) is here discussed. Examples on real grading curves prove that this approach is effective.The advantages of the proposed method for computational mechanics purposes are also disclosed when properly interfaced with visualizationCAD(Computer Aided Design) tools.