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，例如变形机翼，应该包含一个被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。在这项拟议的 DG 研究中，目标是开发一种变形蒙皮，该蒙皮必须通过与变形结构一起变形来满足运动要求，但仍能承受表面载荷。该项目的目标是带头研究一种新型面板变形皮肤，该皮肤由分段面板制成，灵感来自于鱼鳞。该研究计划在三个支柱下提出，旨在研究三种类型的新型面板表皮并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表皮，该面板被设计为一组小面板，通过松散连接通过伸缩联锁系统连接，使它们能够相对移动。此外，形状记忆聚合物 (SMP) 等智能材料用于连接这些面板。将开发一种新方法来模拟该蒙皮系统，考虑将变形结构作为驱动系统，将变形蒙皮作为驱动系统。关键是提供一个合适的约束模型，能够真实地表示相邻面板之间的连接。将开发一种有效的数值方法来解决面板运动，因为计算复杂性随着面板数量的增加而增加。第二个支柱是设计、建模和分析多稳定面板变形皮肤。通过特殊处理，金属/复合材料将表现出双稳态配置，其已用于形状变形，但专注于单个补丁。我们的研究是开发一种多补丁系统，以形成具有多稳定配置的变形皮肤。与第一个柱子设计不同，这个柱子设计所有的贴片都紧密相连。虽然每个贴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。关键是如何对相邻斑块之间的边界条件进行建模并预测整体皮肤形状。第三个支柱是设计、建模和分析连续面板变形蒙皮。目前，连续体机器人已被研究利用细长的杆来形成例如蛇形机器人。我们的研究是使用大而薄且柔性的面板，这些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三者中实际使用中最好的，但它有一些局限性。关键是对整个超静定且与刚性运动耦合的蒙皮系统进行建模。在本计划结束时，将总结所有三种设计的优缺点，可用于指导不同应用的面板变形皮肤设计。拟议的研究计划将有助于在这一新兴领域培养一批研究生，并加强与加拿大航空航天制造业的合作。