题目：基于折纸和剪纸的厚板折叠方法 (Origami- and kirigami-adapted thick-panel folding)

报告人：杨景宜 博士 牛津大学

时间：2023年7月28日9:00-10:00

线下报告地点：武汉大学湖滨会议室

线上参与方式：Join Zoom Meeting

https://us02web.zoom.us/j/89643063072?pwd=VHZUa3JNMTROQXFKNmJaVWRsR0oxUT09

Meeting ID: 896 4306 3072

Passcode: 132425

主持人/联系人：李洋 研究员（yang.li@whu.edu.cn）

摘要：

具有有限厚度的平面阵列广泛用于航天应用，例如太阳能电池板和反射阵列天线。它们需要被打包成小体积以便火箭发射，然后在太空轨道上展开。本次报告将介绍一类可使厚度均匀且具有铰链的刚性面板实现紧凑折叠的方法，并且其可以通过可预测的方式展开成连续的平面。实现“可预测的展开”是通过基于厚板剪纸的特殊几何设计来形成具有单自由度的机构，或者是通过对多自由度机构的动力学模拟以及优化来确保无碰撞展开。

Flat arrays with a finite thickness are widely used in aerospace applications such as solar panels and reflectarray antennas. They need to be packaged into small volumes for launch and subsequently deployed in the orbit. This talk will discuss folding rigid panels of uniform thickness into a compact volume and deploying it back to a continuous and flat surface in a predictable manner afterwards. This can be achieved by either forming an assembly with a single degree-of-freedom (DoF) through special geometric designs of thick-panel kirigami or ensuring a collision-free deployment of a multiple-DoFs system through dynamics simulations.

主讲人简介：

杨景宜，牛津大学博士，现任牛津大学工程系博士后、基布尔学院研究员和助教。在此之前，她在新加坡南洋理工大学获得学士学位。她的研究重点是基于折纸和剪纸的可展开结构设计，这些结构能够经历大且可逆的形状变化。杨博士尤其感兴趣约束这些结构几何大变形的基本原理，也包括这些可展结构在不同荷载下的力学性质。一些潜在应用包括太空天线和太阳能电池阵列、小应变波能转换器和超材料等。

Jingyi Yang is a postdoctoral researcher at department of Engineering Science, Oxford and a Research Fellow and Tutor at Keble College, Oxford. Her research focuses on the design and analysis of origami- and kirigami-adapted deployable structures. These structures have the ability to undergo large, reversible shape changes. Specifically, Jingyi is interested in investigating the fundamental principles that govern the large geometrical changes of these structures, as well as their mechanical behaviour under various loading conditions. Some potential applications of Jingyi’s work include space antennas and solar arrays, small-strain wave energy converters, and metamaterials.