具有可调节机械性能的结构织物
Yifan Wang1,2, Liuchi Li1, Douglas Hofmann3
1Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, USA.
Nature
|August 12, 2021
概括
研究人员从3D粒子中开发出可调节的织物, 施加最小的压力大大增加了刚性,提供了适应性材料解决方案.
科学领域:
- 材料科学
- 机械工程
- 物理
背景情况:
- 结构性面料的特性源于材料和几何结构.
- 通常,面料的特性是在制造后确定的.
- 可调节的机械性能对于先进的应用非常理想.
研究的目的:
- 展示具有可调节曲模量的结构性织物.
- 调查压力下的多层连锁邮件的干扰行为.
- 探索适应性织物的应用.
主要方法:
- 从3D粒子制造分层链条.
- 试验应用外部压力来诱导干扰.
- 离散元素模拟以建模微观结构和宏观性质.
主要成果:
- 链条表现出一个可调的曲模块.
- 小的外部压力 (大约 93 kPa) 的硬度增加了25倍以上.
- 观察到阻塞相位过渡,用功率定律函数描述.
结论:
- 使用互锁的3D粒子可以实现具有可调整刚性的结构性织物.
- 这种阻塞机制为适应性材料提供了一种新的方法.
- 潜在的应用包括可穿戴的外骨,触觉设备和医疗支.
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