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相关概念视频

Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

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In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
Anchoring junctions mechanically attach a cell to the...
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Fabrication of Soft Pneumatic Network Actuators with Oblique Chambers
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具有可调节的机械行为的气动控制格子.

Xiaoheng Zhu1, Yucong Hua1, Dengge Jin1

  • 1Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA, USA.

Communications engineering
|December 13, 2025
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概括
此摘要是机器生成的。

气动执行器重新配置格子结构,提高了120%以上的屈曲强度,并改善了减轻冲击的性能. 这种多功能策略可以在静态和动态负载下提高结构性能.

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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
  • 结构工程 结构工程

背景情况:

  • 格子结构容易曲,故障模式限制了它们的应用.
  • 支柱的曲倾向与局部节点连接相关.
  • 目前用于增强格子性能的方法通常是拓特定的.

研究的目的:

  • 引入气动执行策略,积极调整格子结构的机械行为.
  • 为了证明可重新配置的节点连接,以调节刚性和曲反应.
  • 在静态和动态负载条件下提高结构性能.

主要方法:

  • 在格子结构中嵌入气动执行器.
  • 选择性地将执行器膨胀到空间模式中,以改变节点连接.
  • 应用不同的气压信号来调整曲后的行为.

主要成果:

  • 通过增强的气动图案,实现了121.6%的曲强度的改善.
  • 通过空气压力控制证明了通过空气压力控制对曲后行为进行可编程调整.
  • 减少了50.9%的峰值加速度,以增强减轻冲击.

结论:

  • 气动驱动提供了一种多功能方法来提高格子结构的性能.
  • 该策略在各种格子架构中广泛适用.
  • 这种方法可以提高结构完整性和抗冲击性,而无需物质限制.