String Actuated Curved Folded Surfaces
String Actuated Curved Folded Surfaces
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DOI：
10.1145/3015460
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发表时间：
2017-05
期刊：
影响因子：
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通讯作者：
M. Kilian;Áron Monszpart;N. Mitra
中科院分区：
文献类型：
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作者：
M. Kilian;Áron Monszpart;N. Mitra
弯曲的折叠表面能够通过折叠蚀刻有弯曲折痕的平板来产生优雅的自由形状，因此在计算折纸中占有特殊的地位。艺术家和设计师提出了各种不同的折叠图案来创造一系列有趣的表面。创意过程、设计和制造通常只涉及折叠完成后出现的静态表面。然而，折叠这样的图案是困难的，因为必须同时折叠多个折痕以获得正确折叠的目标形状。我们引入了绳驱动的弯曲折叠表面，可以通过拉动绳网来成形，从而大大简化了创建此类表面的过程，并使折叠运动成为设计的一个组成部分。从技术上讲，我们通过新颖的弦驱动模式在等距形状变形的空间中局部表达所需的折叠路径，解决了哪个表面点串在一起以及如何驱动它们的问题。我们通过计算一系列众所周知的折痕图案的弦驱动网络并测试其在物理原型上的有效性来证明我们方法的有效性。本文中的所有示例都可以从 http://geometry.cs.ucl.ac.uk/projects/2017/string-actuated/ 下载供个人使用。
Curved folded surfaces, given their ability to produce elegant freeform shapes by folding flat sheets etched with curved creases, hold a special place in computational Origami. Artists and designers have proposed a wide variety of different fold patterns to create a range of interesting surfaces. The creative process, design, as well as fabrication is usually only concerned with the static surface that emerges once folding has completed. Folding such patterns, however, is difficult as multiple creases have to be folded simultaneously to obtain a properly folded target shape. We introduce string actuated curved folded surfaces that can be shaped by pulling a network of strings, thus, vastly simplifying the process of creating such surfaces and making the folding motion an integral part of the design. Technically, we solve the problem of which surface points to string together and how to actuate them by locally expressing a desired folding path in the space of isometric shape deformations in terms of novel string actuation modes. We demonstrate the validity of our approach by computing string actuation networks for a range of well-known crease patterns and testing their effectiveness on physical prototypes. All the examples in this article can be downloaded for personal use from http://geometry.cs.ucl.ac.uk/projects/2017/string-actuated/.