织物织物的拉力和压力性能 碳纤维增强的聚合物层,含有三维微血管通道
Ziqian An1, Xiaoquan Cheng1, Dafang Zhao2
1School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China.
Polymers
|March 13, 2024
概括
微血管自愈复合材料,特别是碳纤维增强聚合物 (CFRP) 层级材料,在微血管通道的强度下降. 通道直径线性地影响强度降低,需要仔细考虑FE模型.
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:
- 微血管自愈复合材料为先进的应用提供了潜力.
- 研究这些材料的机械性能对于它们的发展至关重要.
- 具有集成微血管网络的碳纤维增强聚合物 (CFRP) 层材特别感兴趣.
研究的目的:
- 实验性地研究有3D微血管通道的织物CFRP层的拉伸和压缩性能.
- 开发和验证有限元素 (FE) 模型来模拟这些微血管复合材料中的机械行为和损伤传播.
- 分析微血管参数对整体机械性能的影响.
主要方法:
- 实验测试各种微血管通道配置的CFRP层材.
- 开发详细的有限元素 (FE) 模型来模拟机械反应.
- 对FE模型与实验数据的验证.
- 使用验证模型评估微血管影响的参数研究.
主要成果:
- 沿层层厚度 (z方向) 定向的微血管通道是关键应力位置.
- 微血管通道对层层硬度的影响很小,但降低了强度.
- 强度降低与z方向通道直径 (0.1-1毫米) 差不多是线性的.
- 精确的FE建模需要考虑富含树脂的区域,并使用相当的单向层特性.
结论:
- 微血管通道的位置和直径显著影响CFRP层材的强度.
- 为了准确的预测,FE建模方法必须仔细考虑微观结构细节.
- 优化微血管网络设计是平衡自愈能力与机械完整性的关键.
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