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首页> 外文期刊>Journal of aerospace engineering >Computational Multiscale Analysis of the Mechanical Behavior of Radially Grown Carbon Nanotube Architecture
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Computational Multiscale Analysis of the Mechanical Behavior of Radially Grown Carbon Nanotube Architecture

机译：径向生长碳纳米管架构力学行为的计算多尺度分析

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摘要

An atomistically-informed multiscale modeling framework is extended to assess the improvement in mechanical properties of unidirectional fiber-reinforced polymer composites with radially-grown carbon nanotube (CNT) architecture. The multiscale model accounts for damage initiation and evolution in the polymer matrix and CNT-reinforced fiber-matrix interphase region. The model prediction is compared to literature results and available experimental data for verification and benchmarking. Parametric studies are conducted to investigate the influence of various input material and process parameters on the mechanical properties, such as elastic stiffness, strength, and toughness. Also, the interfiber stresses and the onset of damage in the presence of the CNT-reinforced interphase region are investigated to better understand the energy dissipation mechanisms that attribute to the enhancement in the composite strength and toughness. The resulting trends and observations are envisioned to provide qualitative guidance for the development of radially-grown CNT architecture with improved mechanical properties. (c) 2020 American Society of Civil Engineers.
机译：扩展了一种原子上通知的多尺度建模框架，以评估具有径向生长碳纳米管（CNT）架构的单向纤维增强聚合物复合材料的力学性能的改善。多尺度模型占聚合物基质和CNT增强纤维矩阵界面区域的损伤启动和演化。将模型预测与文献结果和可用的实验数据进行比较，以进行验证和基准。进行参数研究以研究各种输入材料和工艺参数对机械性能的影响，例如弹性刚度，强度和韧性。此外，研究了纤维粘附应力和在存在CNT增强间间区域存在下的损伤的发作，以更好地理解归因于复合强度和韧性的增强的能量耗散机制。设想所产生的趋势和观察，以提供具有改进的机械性能的径向增长的CNT架构的定性指导。 （c）2020年美国土木工程师协会。

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