Zhao Xiaoyu, Guo Fei, Li Beibei, Wang Guannan, Ye Jinrui
School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China.
Nanomaterials (Basel). 2022 Apr 8;12(8):1276. doi: 10.3390/nano12081276.
In this paper, we established a progressive multiscale model for a plain-woven composite with hollow microfibers and beads and investigated the general conductive thermal response. Micromechanic techniques were employed to predict the effective conductivity coefficients of the extracted representative volume elements (RVEs) at different scales, which were then transferred to higher scales for progressive homogenization. A structural RVE was finally established to study the influence of microscale parameters, such as phase volume fraction, the thickness of the fibers/beads, etc., on the effective and localized behavior of the composite system It was concluded that the volume fraction of the hollow glass beads (HGBs) and the thickness of the hollow fibers (HFs) had a significant effect on the effective thermal coefficients of the plain-woven composites. Furthermore, it was found that an increasing HGB volume fraction had a more significant effect in reducing the thermal conductivity of composite. The present simulations provide guidance to future experimental testing.
在本文中，我们建立了一种用于具有中空微纤维和珠子的平纹编织复合材料的渐进多尺度模型，并研究了其一般的传导热响应。采用微观力学技术预测不同尺度下提取的代表性体积单元（RVE）的有效电导率系数，然后将其转移到更高尺度进行渐进均匀化。最终建立了一个结构RVE，以研究诸如相体积分数、纤维/珠子厚度等微观尺度参数对复合系统有效和局部行为的影响。得出的结论是，中空玻璃微珠（HGB）的体积分数和中空纤维（HF）的厚度对平纹编织复合材料的有效热系数有显著影响。此外，发现增加HGB体积分数对降低复合材料的热导率有更显著的影响。目前的模拟为未来的实验测试提供了指导。
