紧固矩形三明治管与纤维金属层管的低速度冲击
Yao Wang1,2, Jianxun Zhang1,2,3, Hui Guo1
1Shock and Vibration of Engineering Materials and Structures Key Lab of Sichuan Province, Southwest University of Science and Technology, Mianyang 621010, China.
Polymers
|July 13, 2024
概括
一个新的分析模型预测了纤维金属层 (FML) 三明治管的冲击性能. 增加纤维含量和强度可以提高承载能力和能量吸收,这对于轻质结构至关重要.
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:
- 纤维金属层 (FML) 三明治管结合了纤维复合材料和金属层.
- 这些结构具有很高的强度,刚性和性,非常适合用于轻量承载和吸收能源的应用.
- 建立FML管的分析模型是具有挑战性的,因为复杂的纤维布置.
研究的目的:
- 开发一个分析模型来预测FML三明治管的低速度冲击反应.
- 为设计FML复合管提供理论基础.
- 研究各种参数对带有泡芯的FML三明治管的动态反应的影响.
主要方法:
- 开发了一种经过修改的刚性塑料分析模型,其中包含了纤维布置数和体积分数.
- 进行了低速度撞击的数值模拟,对用泡芯紧的矩形FML三明治管进行了数值模拟.
- 通过将其结果与数值模拟数据进行比较,验证了分析模型.
主要成果:
- 分析模型显示了与数值模拟结果的合理一致.
- 增加金属体积分数 (MVF),强度比和泡强度会影响动态反应.
- 提高FML管中的纤维含量和强度,以及增加泡强度,显著提高承载能力和能量吸收能力.
结论:
- 开发的分析模型为FML三明治管冲击分析提供了可靠的理论基础.
- 纤维特性,特别是纤维含量和强度,对于优化FML管的性能至关重要.
- 分析解决方案适用于预测FML三明治管与金属泡芯在低速度,重质量冲击下的动态反应.
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