Single member actuation of kagome lattice structures
Single member actuation of kagome lattice structures
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DOI：
10.2140/jomms.2007.2.303
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发表时间：
2007-02-01
影响因子：
0.9
通讯作者：
Guest, Simon D.
中科院分区：
文献类型：
--
作者：
Leung, Anthony C. H.;Guest, Simon D.
二维的可果美晶格已被证明是一个有前途的基础，主动形状变化的结构，具有低的驱动阻力和高的被动刚度。一些成员的激活导致全局宏观形状变化。小变形模型表明，kagome晶格的性质是严格依赖于它的初始几何形状。本文研究了可果美格架在单杆驱动下的基本驱动特性，特别是当几何非线性引入大的驱动应变时。致动阻力被发现与膨胀致动降低，观察到一个限制峰值致动刚度时，致动器是灵活的。相反，发现致动阻力随着收缩致动而增加。
The two-dimensional kagome lattice has been shown to be a promising basis for active shape-changing structures, having both low actuation resistance and high passive stiffness. Activation of some members results in a global macroscopic shape change. Small deformation models show that the kagome lattice's properties are critically dependent on its initial geometry. This paper investigates the fundamental actuation properties of a kagome lattice subject to single-member actuation, particularly when geometric nonlinearity is introduced with large actuation strains. Actuation resistance is found to be lowered with expansive actuation; a limiting peak actuation stiffness is observed when the actuator is flexible. Conversely, actuation resistance is found to increase with contractile actuation.