Three-Dimensional Printing of Elastomeric, Cellular Architectures with Negative Stiffness
Three-Dimensional Printing of Elastomeric, Cellular Architectures with Negative Stiffness
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DOI：
10.1002/adfm.201400451
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发表时间：
2014-08-20
影响因子：
19
通讯作者：
Wilson, Thomas S.
中科院分区：
文献类型：
--
作者：
Duoss, Eric B.;Weisgraber, Todd H.;Wilson, Thomas S.
粘弹性油墨的三维打印，以创建多孔的，弹性体的架构与其亚毫米支柱的有序排列的机械性能的报告。两种布局被图案化，一种类似于“简单立方”（SC）样结构，另一种类似于“面心四面体”（FCT）配置。这些结构表现出明显不同的负载响应与方向相关的行为，包括负刚度。更广泛地说，这些研究结果表明，通过微架构设计独立定制细胞固体中的机械响应的能力。这种有序材料有一天可能会取代机械能吸收应用中的随机泡沫。
Three-dimensional printing of viscoelastic inks to create porous, elastomeric architectures with mechanical properties governed by the ordered arrangement of their sub-millimeter struts is reported. Two layouts are patterned, one resembling a "simple cubic" (SC)-like structure and another akin to a "face-centered tetragonal" (FCT) configuration. These structures exhibit markedly distinct load response with directionally dependent behavior, including negative stiffness. More broadly, these findings suggest the ability to independently tailor mechanical response in cellular solids via micro-architected design. Such ordered materials may one day replace random foams in mechanical energy absorption applications.