可编程和弹性超材料具有异型和非线性机械反应,仅由刚性成分组成
Hongyi Yao1,2, Xiaoyu Zhao1, Kaiwen Shi1
1Bio-manufacturing Engineering Laboratory, Tsinghua Shenzhen International Graduate School, Shenzhen, China.
Materials horizons
|July 10, 2024
概括
这项研究引入了新的3D机械超材料,使用曲线束和形结构,在没有超弹性材料的情况下提供可编程的弹性. 这些超材料能够实现先进的应用,如软机器人和自适应式阻尼器.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 机器人技术 机器人技术 机器人技术
背景情况:
- 灵活的超材料提供可编程的机械反应,但通常使用昂贵的超弹性材料和复杂的制造.
- 现有的环保固体成分具有有限的弹性应变,阻碍了它们在先进的超材料中使用.
研究的目的:
- 开发一类新的3D可编程弹性机械超材料.
- 为了克服当前灵活的超材料中成本,复杂性和材料应变限制的局限性.
主要方法:
- 结合曲线束与形元结构,创建新的3D元材料.
- 在大弹性压缩下研究机械性能,包括弹性和模量减小.
- 利用超材料的稳定弹性开发一个米尺度软机器人.
主要成果:
- 在较大的弹性压缩应变 (>0.75) 下表现出强大,异型和非线性弹性.
- 实现了近6个数量级的可编程有效模量减小.
- 成功开发了一种能够在复杂的狭窄空间中导航的米尺度软机器人.
结论:
- 拟议的超材料为可编程主动阻尼器,模块化机器人和医疗康复设备提供了一个多功能平台.
- 这种设计策略消除了对柔性或超弹性构件的需求,简化了制造和降低成本.
- 开发的软机器人展示了这些弹性超材料在复杂环境中的实际应用.
相关概念视频
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