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Benchmarking of strength models for unidirectional composites under longitudinal tension
Composites Part A: Applied Science and Manufacturing ( IF 8.1 ) Pub Date : 2018-03-16 , DOI: 10.1016/j.compositesa.2018.03.016
Anthony Bunsell , Larissa Gorbatikh , Hannah Morton , Soraia Pimenta , Ian Sinclair , Mark Spearing , Yentl Swolfs , Alain Thionnet

Several modelling approaches are available in the literature to predict longitudinal tensile failure of fibre-reinforced polymers. However, a systematic, blind and unbiased comparison between the predictions from the different models and against experimental data has never been performed. This paper presents a benchmarking exercise performed for three different models from the literature: (i) an analytical hierarchical scaling law for composite fibre bundles, (ii) direct numerical simulations of composite fibre bundles, and (iii) a multiscale finite-element simulation method. The results show that there are significant discrepancies between the predictions of the different modelling approaches for fibre-break density evolution, cluster formation and ultimate strength, and that each of the three models presents unique advantages over the others. Blind model predictions are also compared against detailed computed-tomography experiments, showing that our understanding of the micromechanics of longitudinal tensile failure of composites needs to be developed further.



中文翻译:

纵向拉伸下单向复合材料强度模型的基准测试

文献中提供了几种建模方法来预测纤维增强聚合物的纵向拉伸破坏。但是,从未对不同模型的预测与实验数据进行系统,盲目和公正的比较。本文介绍了针对文献中的三种不同模型进行的基准测试:(i)复合纤维束的层次分析定律,(ii)复合纤维束的直接数值模拟,以及(iii)多尺度有限元模拟方法。结果表明,对于纤维断裂密度演化,簇形成和极限强度,不同建模方法的预测之间存在显着差异,并且这三种模型中的每一种都具有相对于其他模型的独特优势。

更新日期:2018-03-16
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