关于T800级单向碳纤维增强聚合物的横向性质的研究
Hao Wang1,2,3, Xiang-Yu Zhong4, He Jia1
1Beijing Institute of Space Mechanics & Electricity, Beijing 100190, China.
Materials (Basel, Switzerland)
|February 26, 2025
概括
这项研究研究了T800碳纤维复合材料的横向机械性能. 模拟准确地预测了压力和压缩下的故障机制和特性,与实验数据保持一致.
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:
- 碳纤维增强聚合物 (CFRP) 是具有异构性质的先进材料.
- 了解横向机械行为对于结构应用至关重要.
- 由于T800级CFRP被广泛使用,因此需要详细的属性表征.
研究的目的:
- 为了确定T800级单向 (UD) CFRP的横向拉伸和压缩机械性能.
- 在横向负载条件下调查故障机制.
- 通过微机械有限元素分析 (FEM) 验证实验结果.
主要方法:
- 实验:对UD复合板材进行横向拉伸和压力测试.
- 实验: 断层学分析断裂形态.
- 计算:微机械FEM模拟用于预测故障过程和属性.
主要成果:
- 实验横向拉伸性能:模量8.7GPa,强度64MPa,拉伸率为0.74%. 试验横向拉伸性能:模量8.7GPa,强度64MPa,拉伸率0.74%.
- 实验横压特性:模量8.4 GPa,强度197.1 MPa,拉伸率3.43%. 试验横压特性:模量8.4 GPa,强度197.1 MPa,拉伸率3.43%. 试验横压特性:模量8.4 GPa,强度197.1 MPa,拉伸率3.43%.
- 对于应力-应变曲线,特性和故障形态,FEM模拟与实验结果有很好的一致性,但偏差很小.
结论:
- T800级CFRP表现出明显的脆性拉伸和塑料压缩故障模式.
- FEM模拟有效地捕获了横向机械行为和故障机制.
- 该研究为工程中T800级CFRP的设计和应用提供了有价值的数据.
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