Auxetic interval determination and experimental validation for a three-dimensional periodic framework
Auxetic interval determination and experimental validation for a three-dimensional periodic framework
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DOI：
10.1177/10812865211041390
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发表时间：
2021-08-31
影响因子：
2.6
通讯作者：
van der Wijk, Volkert
中科院分区：
文献类型：
--
作者：
Borcea, Ciprian S.;Broeren, Freek G. J.;van der Wijk, Volkert
补充行为是指拉伸时的侧向扩大，或相反，压缩时的侧向缩小。当一个最初的形变结构被压缩或拉伸驱动时，它不一定会在更大的变形中保持形变。本文研究了具有一自由度的周期框架在变形中的形变范围。我们使用几何标准来确定变形为辅助变形的区间，并通过10 x 10 x 10单元格的样品结构压缩实验验证这些理论发现。
Auxetic behavior refers to lateral widening upon stretching or, in reverse, lateral shrinking upon compression. When an initially auxetic structure is actuated by compression or extension, it will not necessarily remain auxetic for larger deformations. In this paper, we investigate the auxetic range in the deformation of a periodic framework with one degree of freedom. We use geometric criteria to identify the interval where the deformation is auxetic and validate these theoretical findings with compression experiments on sample structures with 10 x 10 x 10 unit cells.