Stiffness tailoring for improved aeroelastic performance of manufacturable composite wings.

刚度定制可提高可制造复合材料机翼的气动弹性性能。

• 批准号: 2559479
• 金额: --
• 依托单位: University of Bath
• 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-2559479
• 关键词: Stiffness; tailoring; improved; aeroelastic; performance

This project focuses on defining new stiffening concepts for aircraft wings that reduce peak stresses in key locations. This can result in reducing structural weight leading to improved aerodynamic efficiency on novel aircraft configurations (such as fully-electric aircraft used for air taxi). It is anticipated that the aeroelastic performance of a wing will be improved by optimising structural layout (e.g. alignment and position of ribs and curving of stiffeners) and stiffness tailoring of composite materials across the span of the wing (e.g. via curving of fibres). The project will consider different manufacturing techniques (such as Automated Fibre Placement, Discrete Stiffness Tailoring, and Continuous Tow Shearing) and will closely model the various manufacturing constraints. In addition, the trade-off between local and wing level stiffness requirements will be addressed. To fulfil the project's objectives, a computational framework will be developed and used. It will consist of the finite element method for structural modelling coupled with various aerodynamic solvers (such as Doublet Lattice Method). Nastran will be used for aeroelastic investigation. The framework will be integrated with an optimization library to conduct multidisciplinary design and optimization studies.

该项目的重点是为飞机机翼定义新的加强概念，以减少关键位置的峰值应力。这可以减少结构重量，从而提高新型飞机配置（如用于空中滑行的全电动飞机）的空气动力学效率。预计机翼的气动弹性性能将通过优化结构布局（例如肋的对齐和位置以及加强筋的弯曲）和复合材料在机翼跨度上的刚度剪裁（例如通过纤维的弯曲）得到改善。该项目将考虑不同的制造技术（如自动纤维放置、离散刚度剪裁和连续剪切），并将密切模拟各种制造限制。此外，将解决局部和机翼水平刚度要求之间的权衡问题。为了实现该项目的目标，将开发和使用一个计算框架。它将包括用于结构建模的有限元方法以及各种气动求解方法（如双点阵法）。Nastran将用于气动弹性研究。该框架将与优化库集成，以进行多学科设计和优化研究。