Paneled Morphing Skins for A Full Shape Adaptive System

用于全形状自适应系统的镶板变形皮肤

• 批准号: RGPIN-2020-04355
• 负责人: Xi, Fengfeng
• 金额: $ 4.01万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=716989
• 关键词: Paneled; Morphing; Skins; Full; Shape

A full shape adaptive system, such as morphing wings, should contain a morphing structure covered by a morphing skin. In my last DG research, a methodology for designing a morphing structure has been developed. In this proposed DG research, the goal is to develop a morphing skin that must fulfill motion requirement by morphing it along with a morphing structure yet withstand a surface load. The objective of this program is to spearhead a research into a new panel morphing skin that is made of segmented panels, inspired by fish scales. This research program is proposed under three pillars to investigate three types of new panel skins and develop associated design and analysis methodologies. The first pillar is to design, model and analyze a sliding panel skin that is devised as a set of small panels through loose connections joined by a telescopic interlock system allowing them to move relative to each other. Further, smart materials, such as shape memory polymer (SMP), are used to join these panels. A new method will be developed to model this skin system considering a morphing structure as a driving system and a morphing skin as a driven system. The key is to provide a proper constraint model that can truly represent the connections among adjacent panels. An effective numerical method will be developed to solve the panel motions because the computational complexity increases as the number of panels increase. The second pillar is to design, model and analyze a multi-stable panel morphing skin. Through special treatment metallic/composite materials would exhibit bi-stable configurations, which have been used for shape morphing but focusing on a single patch. Our research is to develop a multiple-patch system to form a morphing skin with multi-stable configurations. Different from the first pillar design, this pillar design has all the patches closely connected. Though each patch has two definite stable principal axes, they will behave differently after connection. The key is how to model the boundary conditions among adjacent patches and predict the overall skin shape. The third pillar is to design, model and analyze a continuum panel morphing skin. Currently continuum robots have been researched by utilizing long and slender rods to form for example a snake robot. Our research is to use large, thin and flexible panels that can be deformed to fulfill shape morphing requirement. Though this pillar design may be the best among the three for practical use, it has some limitations. The key is to model the entire skin system that is statically indeterminate and coupled with rigid motion. At the end of this program, all three designs will be summarized in terms of pros and cons that can be used to guide panel morphing skin designs for different applications. The proposed research program will help train a number of graduate students in this emerging area and strengthen collaborations with the Canadian aerospace manufacturing industry.

一个完整的形状自适应系统，如变形的翅膀，应该包含一个变形皮肤覆盖的变形结构。在我最近的DG研究中，开发了一种设计变形结构的方法。在这个拟议的DG研究中，目标是开发一个变形皮肤，必须满足运动的要求，通过变形它沿着变形结构，但承受表面负载。该计划的目的是带头研究一种新的面板变形皮肤，由鱼鳞启发的分段面板制成。该研究计划提出了三个支柱下，调查三种类型的新面板蒙皮和开发相关的设计和分析方法。第一个支柱是设计，建模和分析滑动面板皮肤，该皮肤被设计为一组小面板，通过由伸缩互锁系统连接的松散连接，允许它们相对于彼此移动。此外，智能材料，如形状记忆聚合物（SMP），用于连接这些面板。将开发一种新的方法来模拟这种皮肤系统考虑变形结构作为驱动系统和变形皮肤作为驱动系统。关键是要提供一个合适的约束模型，可以真正代表相邻面板之间的连接。由于计算复杂度随着面元数目的增加而增加，因此需要发展一种有效的数值方法来求解面元运动。第二个支柱是设计，建模和分析多稳定面板变形皮肤。通过特殊的处理，金属/复合材料将表现出双稳态结构，这已被用于形状变形，但集中在一个单一的补丁。我们的研究是开发一个多补丁系统，形成一个变形皮肤与多稳定配置。与第一个支柱设计不同的是，这个支柱设计使所有的贴片紧密连接。虽然每个面片都有两个确定的稳定主轴，但连接后它们的行为会有所不同。关键是如何建立相邻面片之间的边界条件模型并预测整体皮肤形状。第三个支柱是设计，建模和分析一个连续面板变形皮肤。目前，连续体机器人已经通过利用长且细的杆来形成例如蛇机器人而被研究。我们的研究是使用大的，薄的和灵活的面板，可以变形，以满足形状变形的要求。虽然这种支柱设计可能是最好的三个实际使用，它有一些局限性。关键是对整个皮肤系统进行建模，该皮肤系统是静不定的并且与刚性运动耦合。在本课程的最后，所有三种设计将总结的优点和缺点，可用于指导面板变形皮肤设计的不同应用。拟议的研究计划将有助于培养一些研究生在这一新兴领域，并加强与加拿大航空航天制造业的合作。