气动弹性裁剪设计对机翼模式的影响

IF 1.1 4区 工程技术 Q3 ENGINEERING, AEROSPACE
Yajuan He, Junli Wang, Jinyang Li, Bofeng Duan, Yang Zhou, Kangjie Wang
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引用次数: 0

摘要

为了阐明层合板结构参数对预应力下大展弦比机翼模态特性的影响,本文采用CFD/CSD耦合方法,研究了层合板角度、层合板不平衡系数、层合板参考方向影响下的非线性结构模态特性。结果表明:机翼结构前六阶模态频率随分层角的增大而增大,且频率增量变化量随分层角的增大而增大;正负分层角度的频率结果基本一致,没有太大差异。翼型结构的模态频率对不平衡系数的变化不太敏感。混合角度分层方案得到的模态频率明显大于单角度分层方案得到的模态频率。随着敷设参考方向的改变,最低频率一般出现在0°参考方向,并且在每阶模态频率上都有一个或两个极小值。层参考方向角主要在第二象限,有利于模态频率的增强。确定相关层参数后,适当调整层参考方向有利于改变机翼结构的振动特性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Aeroelastic Tailoring Design on Wing Mode
In this paper, in order to clarify the influence of structural parameters of laminates on the modal characteristics of high-aspect-ratio wings under prestress, the CFD/CSD coupling method was used to study the modal characteristics of nonlinear structures under the influence of layering angle, layering unbalanced coefficient, and layering reference direction. The results show that the first six order modal frequencies of wing structure increase with the increase of layering angle, and the increment change of frequency increases with the increase of layering angle. The frequency results of positive and negative layering angles are basically the same, and there is no great difference. The modal frequency of airfoil structure is not very sensitive to the change of unbalanced coefficient. The modal frequencies obtained by the mixed angle layering scheme are obviously larger than those obtained by the layering scheme composed of only two angles. With the change of the reference direction of laying, the lowest frequency is generally present in the 0° reference direction and has one or two minima in each order of modal frequency. The layer reference direction angle mainly in the second quadrant is beneficial to the enhancement of modal frequency. After determining the related layer parameters, the appropriate adjustment of the layer reference direction will be beneficial to change the vibration characteristics of the wing structure.
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来源期刊
CiteScore
2.70
自引率
7.10%
发文量
195
审稿时长
22 weeks
期刊介绍: International Journal of Aerospace Engineering aims to serve the international aerospace engineering community through dissemination of scientific knowledge on practical engineering and design methodologies pertaining to aircraft and space vehicles. Original unpublished manuscripts are solicited on all areas of aerospace engineering including but not limited to: -Mechanics of materials and structures- Aerodynamics and fluid mechanics- Dynamics and control- Aeroacoustics- Aeroelasticity- Propulsion and combustion- Avionics and systems- Flight simulation and mechanics- Unmanned air vehicles (UAVs). Review articles on any of the above topics are also welcome.
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