在压缩软棒网络上打印可逆变形
Harsh Jain1,2, Shankar Ghosh2
1Simons Centre for the Study of Living Machines, National Center for Biological Sciences, Bengaluru-560065, India. harshjainldh@gmail.com.
Soft matter
|June 14, 2024
概括
软细胞材料表现出可逆变形储存. 在压缩下,它们进入伪塑性阶段,保留痕,直到消除外部应变,与它们的弹性阶段行为不同.
科学领域:
- 材料科学 材料科学 材料科学
- 材料机械学 材料机械学
- 聚合物科学 聚合物科学
背景情况:
- 软细胞材料,聚合物棒的网络,表现出复杂的机械反应.
- 了解这些材料的变形行为对于设计先进应用至关重要.
研究的目的:
- 为了研究压缩软细胞材料中机械变形储存的新兴行为.
- 要区分弹性和伪塑性变形模式.
- 为了模拟可逆变形储存背后的基于摩擦的机制.
主要方法:
- 在压力应变下软细胞材料的实验性表征.
- 在弹性和伪塑性体制中分析材料反应.
- 开发一种基于摩擦的模型来解释观察到的行为.
主要成果:
- 在压缩下,软细胞材料从弹性 (放松) 过渡到伪塑性 (变形储存) 状态.
- 隙在伪塑料阶段无限期存储.
- 在移除外部应变场后,变形是可逆的.
结论:
- 一种新的伪塑料模式使软细胞材料中的可逆机械变形存储成为可能.
- 摩擦在观察到的变形储存和恢复中起着关键作用.
- 这种行为为开发具有可调整机械内存的材料提供了潜力.
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