关于Markforged 3D打印碳/Kevlar混合连续纤维复合材料蜂巢结构的防撞性能的实验和模拟研究
Jinlong Ju1, Nana Yang1, Lei Yu2
1College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China.
Materials (Basel, Switzerland)
|January 11, 2025
概括
使用碳纤维和凯弗拉纤维的混合纤维复合蜂巢显示出更好的性能. 碳/Kevlar设计提供高能吸收和成本效益,而碳纤维增强聚合物 (CFRP) 蜂提供优越的承载能力.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 复合材料 复合材料 复合材料
背景情况:
- 局部脆性骨折是复合蜂的一个关键挑战.
- 纤维杂交提供了一个解决方案,但由于纤维相互作用,引入了复杂的故障机制.
研究的目的:
- 为了研究3D打印混合连续纤维复合材料蜂巢的结构故障行为.
- 分析碳和凯弗拉纤维组合的混合效应和故障机制.
主要方法:
- 使用Markforged 3D打印制造混合蜂巢 (Onyx,碳,凯夫拉,碳/凯夫拉,凯夫拉/碳).
- 实验性压碎试验,以评估故障模式和性能.
- 开发用于故障分析的等效有限元建模方法.
主要成果:
- 碳/Kevlar蜂显示了最高的能量吸收和成本效益.
- 碳复合材料蜂表现出最高的承载能力.
- 与单纤维类型相比,在碳/Kevlar 和 Kevlar/碳蜂中观察到显著的混合效应.
- 凯弗拉纤维促进了可伸缩的崩,而欧尼克斯蜂则显示了脆弱的崩.
结论:
- 通过3D打印的混合纤维复合材料蜂巢为特定应用提供可调节的特性.
- 了解混合机制对于优化设计和预测故障至关重要.
- 这项研究为先进的复合蜂设计和分析提供了洞察力.
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