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首页> 外文期刊>Thin-Walled Structures >Axial-Compression performance and finite element analysis of a Tubular Three-Dimensional-Woven Composite from a Meso-structural approach
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Axial-Compression performance and finite element analysis of a Tubular Three-Dimensional-Woven Composite from a Meso-structural approach

机译：轴向压缩性能和中学三维织物复合材料的轴向压缩性能和有限元分析

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摘要

The concept of green environmental protection is becoming increasingly important. This study used green high performance basalt-fiber filament tows as raw materials to prepare tubular three-dimensional (3D)-woven pre forms on a semi-automatic loom. Then, using the prepared preforms for reinforcement and resin as the matrix, a vacuum-assisted resin-transfer method was used to prepare tubular 3D-woven composites with three different internal diameters and layers. Axial-compression experiments were conducted to obtain the tubular 3D-woven composites' load-displacement curves and the energy-absorption capacities. The results reveal that both the inner diameter and the number of layers have significant effects on the composites' axial-compression properties. As the inner diameter and layers increase, the peak load and energy absorption of tubular 3D-woven composites both have clearly increasing trends. Finally, a finite element analysis from a mesoscale approach was conducted to simulate the axial compression of the tubular 3D-woven composites in comparison with the experimental results. The analysis shows the initial damage, stress evolution, and final failure; it also reveals the stress concentration and failure mechanisms of the composites following the axial compression. Additionally, the preforms used as reinforcements withstand the main loads in the compression process. Finally, the stress-distribution analysis confirms a secondary role for the resin.
机译：绿色环保的概念越来越重要。本研究采用了绿色高性能玄武岩 - 纤维长丝，作为原料，在半自动织机上制备管状三维（3D） - 纺织品预形成。然后，使用用于增强和树脂作为基质的制备的预制件，使用真空辅助树脂转移方法，用于制备具有三个不同内径和层的管状3D编织复合材料。进行轴向压缩实验以获得管状3D编织复合材料的负载 - 位移曲线和能量吸收能力。结果表明，层内径和层数都对复合材料的轴向压缩性质具有显着影响。随着内径和层的增加，管状3D织造复合材料的峰值负荷和能量吸收既明显增加趋势。最后，进行了来自Mescle方法的有限元分析，以模拟与实验结果相比管状3D编织复合材料的轴向压缩。分析显示初始损害，压力演化和最终失败;它还揭示了轴向压缩后复合材料的应力浓度和失效机构。另外，用作增强件的预制件可承受压缩过程中的主要负载。最后，应力分配分析证实树脂的二级作用。

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