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轻量级 3D 层次化元材料 微网格

Luke Mizzi1, Krzysztof K Dudek2,3, Andrea Frassineti1

  • 1Department of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, Reggio Emilia, 42121, Italy.

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概括

使用立方格子的新层次辅助性超材料提供了增强的机械性能和减轻的重量. 这些轻量级的3D旋转结构表现出可调整的刚性和负波桑度.

关键词:
辅助性元材料 辅助性元材料层次系统是一个层次系统.轻量级结构结构的轻量级结构.微网格结构的结构是微网格结构.两光子光刻 lithography 的两个光子.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 机械工程 机械工程
  • 纳米技术纳米技术

背景情况:

  • 层次辅助性元材料具有多层架构,以提高机械性能.
  • 传统的密集超材料往往缺乏轻量化特征.

研究的目的:

  • 设计新型的等级辅助性超材料,采用立方晶格子的几何结构.
  • 研究这些新结构的机械性能和轻量潜力.

主要方法:

  • 将体中心立方体 (BCC),面中心立方体 (FCC) 和四面体立方体 (TC) 格子几何体纳入3D旋转立方体结构.
  • 减小体积分数超过90%以实现轻量化设计.
  • 微尺度格子结构的制造,使用双光子光刻和现场测试.

主要成果:

  • 显著减少体积分数,使密集的超材料轻量化,同时保持辅助性行为.
  • 展示了各种可调整的刚度和波桑比率,包括巨大的负值.
  • 实现了优异的刚度/密度比率,适合轻量化应用.

结论:

  • 层次的引入有效地提高了机械性能,并降低了辅助性超材料的重量.
  • 拟议的设计方法为创建轻量级3D旋转单元辅助性结构提供了优势.
  • 实验验证证证实了对先进材料应用的层次设计的好处.