在高速冲击负载下混合3D编织复合材料的能量吸收
Kun Wang1, Chao Li2, Zhiming Xu1
1State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Materials (Basel, Switzerland)
|June 13, 2025
概括
优化凯弗拉纤维和碳纤维混合复合材料可以提高能量吸收. 凯弗拉的战略位置和比例显著提高了3D织物结构的抗冲击能力,增加了高达24.92%的能量吸收率.
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:
- 高速冲击对复合材料的完整性构成重大挑战.
- 优化能量吸收对于保护结构和组件至关重要.
- 三维编织复合材料提供独特的结构性质,但需要针对抗冲击性能量身定制的设计.
研究的目的:
- 为了研究凯弗拉和碳纤维混合的3D编织复合材料在高速冲击下的能量吸收能力.
- 开发和验证一个计算模型来预测这些混合复合材料的冲击行为.
- 确定最佳的混合化策略,以提高3D编织结构中的能量吸收.
主要方法:
- 为混合3D编织复合材料开发高速冲击模型.
- 应用3D哈辛和·米塞斯的失败标准与凝聚性元素进行分层模拟.
- 通过与实验测试结果进行比较来验证模型.
- 利用人工神经网络来有效预测复合性能.
主要成果:
- 经过验证的模型准确地模拟了Kevlar和碳纤维混合复合材料的冲击反应.
- 最佳的定位和凯弗拉混合的比例对于最大限度地吸收能量,同时保持结构刚性至关重要.
- 调整混合线组合,即使保持恒定的凯弗拉比例,也可以显著增加能量吸收.
结论:
- 凯弗拉混合化显著提高了3D编织复合材料目标板在高速冲击下的能量吸收.
- 凯弗拉的位置和比例是优化冲击性能的关键设计参数.
- 通过优化混合线组合,通过优化混合线组合,获得了最大24.92%的能量吸收增加.
相关概念视频
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