关于CFRP-合金层状短管的轴向压缩性能研究
Xiaoqun Luo1, Yanheng Li1, Li Wang2
1College of Civil Engineering, Tongji University, Shanghai 200092, China.
Materials (Basel, Switzerland)
|August 14, 2025
概括
本研究介绍了CFRP-合金层状管,增强空间结构的强度和可塑性. 与合金管相比,这些复合管的承载能力增加了11-31%.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 结构工程 结构工程
背景情况:
- 碳纤维增强聚合物 (CFRP) 提供高强度与重量比,但缺乏柔性,且成本高昂.
- 合金提供良好的柔性和较低的成本,但具有较低的强度.
- 将这些材料组合到一个层状管结构中,可以解决单个组件的局限性.
研究的目的:
- 开发和研究新型CFRP-合金层状管 (CFRP-AL管) 的轴向压缩性能.
- 建立CFRP-AL管在轴向压缩下承载能力的预测模型.
- 探索各种参数对这些复合管的故障机制和响应的影响.
主要方法:
- 实验测试包括用于材料特性 (6061-T6合金和CFRP) 的拉力测试和27个CFRP-AL管和3个合金管的轴向压缩测试.
- 使用已开发的复合材料渐进损坏模型和CFRP故障的用户材料子程序进行数值模拟.
- 理论分析以建立基于强度理论的承载能力的预测公式.
主要成果:
- CFRP-AL管表现出强度损坏作为小细度比率的主要模式.
- 与合金管相比,CFRP-AL管的最终承载能力增加了11-31%.
- 承载能力的预测公式与实验和数值结果有很好的一致性.
结论:
- 开发的CFRP-AL管有效地结合了CFRP和合金的有益特性.
- 该研究提供了一种经过验证的方法来分析这些复合结构的轴向压缩性能.
- 这些发现支持CFRP-AL管在空间结构中的广泛应用前景.
相关概念视频
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