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基于Kiri-Origami的二叉式机械超材料的几何力学

Yanbin Li¹, Caizhi Zhou¹, Jie Yin¹

¹Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27606, USA.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

|October 7, 2024

概括

这项研究介绍了一种新的设计策略,使用动态分叉来创建可重新配置的机械超材料. 这些灵感来自于原木/基里加米的结构提供可调整的机械性能和多个变形路径.

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:

奥里加米和基里加米的原理使得复杂结构的设计成为可能.
可重新配置的机械超材料提供可调节的特性.
动力分叉是机械系统中的一个现象.

研究的目的:

探索3D层次,可重新配置的机械超材料的新设计策略.
为了利用可调节的机械反应的动力分叉.
为了创建基于原木/基里格米的超材料,具有增强的重构性.

主要方法:

从刚性可旋转的立方体构建基本结构单元 (4R,6R,8R机制).
通过试验校正建模分析地研究重构动力学,并使用试验校正建模预测动力学分叉.
测星化构建块以创建3D分叉层次的机械超材料.
开发几何力学,考虑弹性扭力能量来预测机械性质.

主要成果:

演示了可重新配置的等级构建块的创建,展示了动力学分叉.
成功预测了动力学分叉的发生和位置.
开发了3D分叉层次的机械超材料,可以保持动力分叉.
展示了可调节的异构波桑比率和刚度.
观察到动力分叉对机械反应的显著影响,包括Poisson比率的信号变化和增强的变形路径.

结论:

动力分叉是设计可重新配置的机械元材料的强大工具.
这种方法可以实现可调节的异构性,克服刚性极性,并增加变形路径.
开发的超材料为先进的应用提供了新的功能.

关键词:

动力学分叉的动力学分叉奥里加米和基里加米.可重新配置的等级机械超材料.刚度异型性不同型性可调节的波桑比率的比率.

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