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A Data-Driven Multiscale Theory for Modeling Damage and Fracture of Composite Materials

机译:数据驱动的多尺度理论,用于复合材料的损伤和断裂建模

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The advent of advanced processing and manufacturing techniques has led to new material classes with complex microstructures across scales from nanometers to meters. In this paper, a data-driven computational framework for the analysis of these complex material systems is presented. A mechanistic concurrent multiscale method called Self-consistent Clustering Analysis (SCA) is developed for general inelastic heterogeneous material systems. The efficiency of SCA is achieved via data compression algorithms which group local microstructures into clusters during the training stage, thereby reducing required computational expense. Its accuracy is guaranteed by introducing a self-consistent method for solving the Lippmann-Schwinger integral equation in the prediction stage. The proposed framework is illustrated for a composite cutting process where fracture can be analyzed simultaneously at the microstructure and part scales.
机译:先进的加工和制造技术的出现导致了具有从纳米到米尺度的复杂微观结构的新材料类别。在本文中,提出了一种用于分析这些复杂材料系统的数据驱动的计算框架。针对一般的非弹性非均质材料系统,开发了一种称为自洽聚类分析(SCA)的机制并行多尺度方法。 SCA的效率是通过数据压缩算法实现的,该算法在训练阶段将局部微结构分组为簇,从而减少了所需的计算费用。通过引入自洽方法在预测阶段求解Lippmann-Schwinger积分方程,可确保其准确性。所提出的框架用于复合切削工艺,可以在微观结构和零件尺度上同时分析断裂。

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