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论文:2014,Vol:32,Issue(6):843-848 |
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引用本文： |
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白俊强, 辛亮, 刘艳, 华俊, 李国俊. 复合材料后掠机翼的气动弹性剪裁方法研究[J]. 西北工业大学学报 |
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Bai Junqiang, Xin Liang, Liu Yan, Hua Jun, Li Guojun. Exploring an Aeroelastic Tailoring Design Method for Composite Backswept Wing[J]. Northwestern polytechnical university |
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| 复合材料后掠机翼的气动弹性剪裁方法研究 |
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| 白俊强1, 辛亮1, 刘艳1, 华俊1,2, 李国俊1 |
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1. 西北工业大学 航空学院, 陕西 西安 710072;
2. 中国航空研究院, 北京 100191 |
| 摘要: |
| 提出了一种混合多级结构优化算法,以大展弦比复合材料后掠机翼为研究对象进行了气动弹性剪裁设计。在满足强度、变形约束等前提下,以梁、肋、蒙皮厚度,对结构重量进行最小化设计;继续以减重为目标,满足颤振速度的约束,优化蒙皮各铺层的比例,并分析了优化中铺层比例对颤振速度的影响;采用遗传算法优化蒙皮的铺层顺序,以增大机翼的颤振速度。研究表明:混合多级结构优化不仅可以减轻机翼的结构重量,还能大大提高机翼的颤振速度;铺层比例优化结果表明较高的±45°铺层比例能使刚度分布更加合理高效。 |
| 关键词:
复合材料
后掠翼
气动弹性剪裁设计
混合多级结构优化算法
颤振
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| Exploring an Aeroelastic Tailoring Design Method for Composite Backswept Wing |
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| Bai Junqiang1, Xin Liang1, Liu Yan1, Hua Jun1,2, Li Guojun1 |
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1. School of Aeronautics, Northwestern Polytechnical University Xi'an 710072, China;
2. Chinese Aeronautics Establishment, Beijing 100191, China |
| Abstract: |
| We propose a hybrid multilevel structural optimization algorithm to carry out the aeroelastic tailoring de-sign of a high-aspect-ratio composite backswept wing. First,under the precondition that the constraints for strengthand displacement are met,we use the thicknesses of beam,rib and skin as design variables to minimize the struc-tural weight of the composite wing. Second,we try to lighten its structural weight by optimizing the proportions ofskin plies under the condition that the constraintg for the flutter speed of the composite wing are met and then ana-lyze the effects of the proportions of skin plies on the flutter speed. Finally,in order to increase the flutter speed,we use the hybrid multilevel structural optimization algorithm to optimize the order of skin plies and carry out theaeroelastic tailoring design of the high-aspect-ratio backswept composite wing. The optimization results, given in Ta-bles 1,2 and 3 and Fig. 3,and their analysis show preliminarily that: (1) the use of the hybrid multilevel struc-tural optimization algorithm can not only lighten the structural weight but also increase the flutter speed; (2) thewing skin with the lighter ply proportion of ±45°has a more efficient and reasonable stiffness distribution. |
| Key words:
aeroelasticity
aspect ratio
composite materials
control
damping
design
evolutionary algorithms
flexible wings
flowcharting
flutter
iterative methods
matrix algebra
modal analysis
stiffness ma-trix
structural optimization
swept wings
aeroelastic tailoring design
hybrid multilevel structural op-timization algorithm
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| 收稿日期: 2014-04-28
修回日期:
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| DOI: |
| 通讯作者:
Email： |
| 作者简介: 白俊强(1971-)，西北工业大学教授、博士生导师，主要从事飞行器设计的研究。
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| 作者相关文章 |
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| 白俊强 在本刊中的所有文章 |
| 辛亮 在本刊中的所有文章 |
| 刘艳 在本刊中的所有文章 |
| 华俊 在本刊中的所有文章 |
| 李国俊 在本刊中的所有文章 |
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