论文标题
从平面图案织物中编程僵硬的充气壳
Programming stiff inflatable shells from planar patterned fabrics
论文作者
论文摘要
缺乏刚度通常会将稀薄的形状转化结构限制在小尺度上。扭曲指标所需的大型内部转换通常是通过使用软水凝胶或弹性体来实现的。我们在这里介绍了一种多功能的单步方法，以塑造僵硬的膨胀结构，为众多大规模应用打开大门，从可部署的空间可部署结构到紧急避难所不等。该技术依赖于通过热密封叠加的扁平准底面织物表获得的通道图案。充气通道会引起各向异性的面内收缩，从而可能改变高斯曲率。接缝线充当平面内变形的导演字段，编码已部署结构的形状。我们提出了三种模式方法，用于用非欧几里得指标对壳进行定量和分析编程。除了形状外，我们还用缩放定律描述了膨胀结构的机械性能。大型部署的结构可以抵抗其重量，从而大大拓宽了应用的调色板。
Lack of stiffness often limits thin shape-shifting structures to small scales. The large in-plane transformations required to distort the metrics are indeed commonly achieved by using soft hydrogels or elastomers. We introduce here a versatile single-step method to shapeprogram stiff inflated structures, opening the door for numerous large scale applications, ranging from space deployable structures to emergency shelters. This technique relies on channel patterns obtained by heat-sealing superimposed flat quasi-inextensible fabric sheets. Inflating channels induces an anisotropic in-plane contraction and thus a possible change of Gaussian curvature. Seam lines, which act as a director field for the in-plane deformation, encode the shape of the deployed structure. We present three patterning methods to quantitatively and analytically program shells with non-Euclidean metrics. In addition to shapes, we describe with scaling laws the mechanical properties of the inflated structures. Large deployed structures can resist their weight, substantially broadening the palette of applications.
