| 碳纤维-玻璃纤维混杂增强环氧树脂三维编织复合材料薄壁圆管压溃吸能特性与损伤机制 |
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| 引用本文： | 张徐梁,阳玉球,阎建华,马岩.碳纤维-玻璃纤维混杂增强环氧树脂三维编织复合材料薄壁圆管压溃吸能特性与损伤机制[J].复合材料学报,2021,38(9):2821-2828. |
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| 作者姓名： | 张徐梁 阳玉球 阎建华 马岩 |
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| 作者单位： | 东华大学 纺织学院上海市高性能纤维复合材料省部共建协同创新中心,上海201620;东华大学 产业用纺织品教育部工程研究中心,上海201620;东华大学纺织科技中心,上海201620;南通大学纺织服装学院,南通226019 |
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| 基金项目： | 国家商用飞机制造工程技术研究中心创新基金项目(COMAC-SFGS-2019-342)；江苏省高校自然科学研究面上项目(19KJB430029) |
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| 摘 要： | 基于三维编织成型及真空辅助树脂传递成型技术，制备了编织纱和轴纱不同混杂方式(编织纱/轴纱:碳纤维-碳纤维(CF-CF)、碳纤维-玻璃纤维(CF-GF)；玻璃纤维-碳纤维(GF-CF))增强环氧树脂(EP)的三类三维编织复合材料薄壁圆管，通过准静态轴向压溃及详细的破坏断面观察，研究了纤维混杂方式对薄壁圆管的能量吸收性能和破坏模式的影响。研究发现:CF-CF/EP样品的比能量吸收值分别比GF-CF/EP大36%，比CF-GF/EP大12%。编织纱为碳纤维时(CF-CF/EP及CF-GF/EP)，圆管的破坏模式均为折叠破坏模式，编织纱采用碳纤维能有效地遏制中央裂纹的轴向扩展，折叠变形的三维结构内部发生了较多细小的微观破坏。而编织纱为玻璃纤维的GF-CF/EP，破坏模式则为开花内外弯曲式，中央裂纹产生，三维结构呈现分层并向圆管内外弯曲。
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| 关 键 词： | 三维编织 纤维混杂 复合材料 能量吸收机制 轴向准静态压缩 |
| 收稿时间： | 2020-09-14 |
Crushing energy absorption characteristics and damage mechanism of carbon fiber-glass fiber hybrid reinforced epoxy 3D braided composite thin-walled circular tube |
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| Affiliation: | 1.Shanghai Collaborative Innovation Center for High Performance Fiber Composites, School of Textiles, Donghua University, Shanghai 201620, China2.Key Laboratory of Textile Technology of Ministry of Education, Donghua University, Shanghai 201620, China3.Donghua University, Textile Technology Center, Shanghai 201620, China4.School of Textile and Clothing, Nantong University, Nantong 226019, China |
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| Abstract: | Based on 3D braiding and vacuum assisted resin transfer molding, three types of epoxy (EP) matrix three-dimensional braided composite thin-walled circular tubes with different hybrid modes (braided yarn/axial yarn: carbon fiber-carbon fiber (CF-CF), carbon fiber-glass fiber (CF-GF), glass fiber-carbon fiber (GF-CF)) were prepared. Through quasi-static axial crushing and detailed observation of failure section, the influence of fiber hybrid mode of thin-walled tube on energy absorption performance and failure mode was studied. The results show that: the specific energy absorption values of CF-CF/EP samples are 36% and 12% higher than those of GF-CF/EP and CF-GF/EP, respectively. When the braided yarns are made of carbon fiber (CF-CF/EP and CF-GF/EP), the failure mode of circular tube is folding failure mode. Carbon fiber is used in braided yarn to effectively restrain the axial expansion of central crack, and more tiny micro damage occurs in the 3D structure of folding deformation. However, when the braided yarn is made of glass fiber (GF-CF/EP), and the failure mode is flowering and bending inside and outside, the central crack is produced, and the 3D structure presents delamination and bends to the inside and outside of circular tube. |
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