双负机械超材料同时表现出负弹性模量和负泊松比特性。
Double-Negative Mechanical Metamaterials Displaying Simultaneous Negative Stiffness and Negative Poisson's Ratio Properties.
机构信息
Materials and Engineering Research Institute, Faculty of Arts, Computing, Engineering and Sciences, Sheffield Hallam University, Howard Street, Sheffield, S1 1WB, UK.
72 Phillips Lane, Formby, Liverpool, L37 4BQ, UK.
出版信息
Adv Mater. 2016 Dec;28(46):10323-10332. doi: 10.1002/adma.201603959. Epub 2016 Oct 26.
A scalable mechanical metamaterial simultaneously displaying negative stiffness and negative Poisson's ratio responses is presented. Interlocking hexagonal subunit assemblies containing 3 alternative embedded negative stiffness (NS) element types display Poisson's ratio values of -1 and NS values over two orders of magnitude (-1.4 N mm to -160 N mm ), in good agreement with model predictions.
本文提出了一种可扩展的机械等效材料，同时显示出负刚度和负泊松比响应。包含 3 种不同嵌入式负刚度（NS）单元类型的互锁六边形亚单位组件显示泊松比为-1 和 NS 值超过两个数量级（-1.4 N·mm 至-160 N·mm），与模型预测吻合较好。
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