磁力驱动的kirigami的物理意识的可差异化设计用于形状变形
Liwei Wang1, Yilong Chang2, Shuai Wu2
1Department of Mechanical Engineering, Northwestern University, Evanston, IL, 60208, USA.
Nature communications
|December 21, 2023
概括
这项研究引入了一种新的框架,用于设计活跃的kirigami,当磁性刺激时,这些kirigami会在物理上变成所需的形状. 这种方法有效地为先进的应用程序创建复杂的,可控制的形状变形结构.
科学领域:
- 材料科学与工程 材料科学与工程
- 机器人和软系统 机器人和软系统
- 计算设计和优化计算设计和优化
背景情况:
- 对先进的多功能系统来说,形状变形是必不可少的,而kirigami提供了巨大的潜力.
- 当前的kirigami设计往往忽视了基础物理,主要关注动力学.
- 活性kirigami,软材料与嵌入磁性颗粒,可以响应外部刺激,如磁场.
研究的目的:
- 为活跃的kirigami开发一个可差异化的反向设计框架,集成物理原理.
- 通过磁刺激实现目标形状变形的kirigami结构的设计.
- 为了弥合几何设计和刺激响应材料的物理行为之间的差距.
主要方法:
- 在受约束的优化框架内结合可微分动力学和能量模型.
- 同时设计了kirigami切割和磁化方向,以实现动力学和物理可行性.
- 利用磁刺激作为外在的刺激来改变形状.
主要成果:
- 实现了高效的复杂kirigami设计的自动生成.
- 证明了远程控制的变形成复杂的目标形状和多个状态.
- 与动力学要求一起验证了物理可行性.
结论:
- 提出的可微分反向设计框架成功地将物理整合到kirigami设计中,以实现积极的形状变形.
- 这种方法可以有效地创建复杂,可控制和物理可行的kirigami结构.
- 该框架可适应各种活跃系统,推进灵活电子和微创手术的应用.
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