Robust Aeroelastic Tailoring for Highly Flexible Aerostructures using Composite Material

使用复合材料实现高度灵活的航空结构的稳健气动弹性剪裁

• 批准号: 2581922
• 金额: --
• 依托单位: University of Strathclyde
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2581922
• 关键词: Robust; Aeroelastic; Tailoring; Highly; Flexible

The project I am proposing is titled 'Robust Aeroelastic Tailoring for Highly Flexible Aerostructures using Composite Material 'under the supervision of Dr Jie Yuan, with the aim of developing robust numerical tools for aeroelastic analysis. In modern aircraft design numerical tools are required to consider the dynamic characteristics of structures in response to fluid flows and when composite materials are also taken into account the models can become extremely complex. It is an exciting area of research, where further work is required that I aim to contribute to. This will be achieved through in-depth research, numerical analysis, coding, and computational experimentation.The main challenge that will be tackled is development of tools to effectively consider structural uncertainties that come with composite materials and nonlinearities in aeroelastic analysis. With these tools' analysis will be performed to predict the flutter characteristics of aerospace structures and methods of mitigating any negative response will be investigated. Once a tool is completed it will hopefully be capable of accurate predictions in composite-made flexible aerospace structures such as high aspect ratio wings, tiltrotor systems and fan blade systems in engines.There are many areas of the field to engage with, but before starting any work an extensive literature review will take place to deepen my knowledge of flutter modelling and the most up to date research in the area. Once a confident understanding is achieved and an in-depth knowledge of the direction the most contemporary research is heading is reached, the development of numerical tools will start. Similar to the methods carried out in my previous project work, the tools will be based around integration of mathematical models constructed to describe specific aircraft structures, employing Lagrange's energy equations and characteristic equations of aerodynamic behaviour. At first, low degrees of freedom will be considered to set up a base, but once confidence and a firm methodology has been built, higher degrees of freedom will be investigated and modelled. Dealing with nonlinearities is a key factor in the project that Limit Cycle Oscillations will aid with. Quantifying the effects of uncertainties in composite materials is another important role the tools must play, where complex modelling and understanding of materials will be required. Implementing state of the art numerical solvers with stochastic polynomial chaos expansion (PCE) models to handle uncertainties is a possibility. Finally, if required, FEA and CFD experimentation will take place, either to support results obtained form the constructed tools or collaborate with them. Hopefully through this work groundwork will be set for future researchers at the University to continue and expand further, while also developing tools that are to an industry standard.

我提出的项目的标题为“在Jie Yuan博士的监督下，使用复合材料的高度柔韧性空气结构进行了“强大的航空弹性调整”，其目的是开发可强大的数值工具，以进行气动弹性分析。在现代飞机设计中，需要数值工具来考虑响应流体流的结构的动态特性，并且当还考虑了复合材料时，模型可能会变得非常复杂。这是一个令人兴奋的研究领域，需要进一步的工作，我的目标是为此做出贡献。这将通过深入研究，数值分析，编码和计算实验来实现。将要解决的主要挑战是开发工具，以有效地考虑复合材料和非线性随附的结构性不确定性。通过这些工具的分析，将研究航空航天结构的扑动特征和缓解任何负面反应的方法。工具完成后，有望能够在发动机中的高纵横比翅膀，翼展系统和风扇叶片系统等复合制造的灵活的航空航天结构中进行准确的预测，但是在开始任何工作之前，有许多领域的领域都可以进行广泛的文献审查，以深入研究我对飞行模型的知识，并在该领域进行了研究。一旦获得了自信的理解，并深入了解了当代研究所在的方向，数值工具的开发就会开始。类似于我以前的项目工作中采用的方法，这些工具将基于使用拉格朗日的能量方程和空气动力学行为的特征方程来构建的数学模型的整合。最初，将考虑低自由度来建立一个基础，但是一旦建立了信心和坚定的方法，就会研究和建模更高的自由度。处理非线性是限制周期振荡将有助于的项目的关键因素。量化复合材料中不确定性的影响是工具必须扮演的另一个重要作用，在这种情况下，需要对材料进行复杂的建模和理解。具有随机多项式混乱扩展（PCE）模型来处理不确定性的最先进的数值求解器的状态是可能的。最后，如果需要，将进行FEA和CFD实验，以支持获得的结果形成构造工具，或与它们合作。希望通过这项工作，将为大学的未来研究人员设定基础，以继续并进一步扩展，同时还将开发符合行业标准的工具。