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首页> 外文会议>RILEM Proceedings PRO 39; RILEM Symposium on Fibre-Reinforced Concretes(FRC) - BEFIB 2004 vol.1; 20040920-22; Varenna(IT) >NUMERICAL MODELING OF FIBER REINFORCED CEMENT COMPOSITES: LINKING MATERIAL SCALES
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NUMERICAL MODELING OF FIBER REINFORCED CEMENT COMPOSITES: LINKING MATERIAL SCALES

机译：纤维增强水泥复合材料的数值模拟：链接材料尺度

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摘要

Numerical models can be used to link the material parameters of fiber reinforced cement composites (FRCC) to performance measures defined at the composite scale, such as strength, toughness, and crack size distributions. The effectiveness of such model-based simulation depends not only on the accuracy and robustness of the analysis procedures, but also on facilitating the overall process of model construction, analysis, and results interpretation. The goal is to support the creative design of materials and structural components exposed to severe loading and environmental conditions. This paper discusses the direct modeling of individual fibers and the fiber-matrix interface, within a random lattice representation of the material matrix. Using this multi-scale simulation framework, models are proposed for analyzing FRCC subjected to drying environments. The recent extension of this framework to three dimensions is described, along with its use in studying the restraining effects of fibers on concrete shrinkage.
机译：可以使用数值模型将纤维增强水泥复合材料（FRCC）的材料参数与复合材料级别定义的性能指标（例如强度，韧性和裂缝尺寸分布）联系起来。这种基于模型的仿真的有效性不仅取决于分析过程的准确性和鲁棒性，还取决于促进模型构建，分析和结果解释的整个过程。目标是支持承受严重载荷和环境条件的材料和结构部件的创新设计。本文讨论了在材料矩阵的随机晶格表示内，单个纤维和纤维-基质界面的直接建模。使用这种多尺度仿真框架，提出了用于分析干燥环境下的FRCC的模型。描述了该框架在三个维度上的最新扩展，以及它在研究纤维对混凝土收缩的抑制作用中的用途。

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