全动翼面间隙非线性气动弹性响应分析
V211.47; 战斗机全动翼面操纵系统中普遍存在间隙,其非线性特性不但影响系统地面振动试验数据的有效性,而且可能导致飞行器气动弹性稳定性边界产生偏差,因此有必要开展考虑间隙非线性的气动弹性响应分析研究.以全动翼面旋转方向间隙为研究对象,基于虚拟质量法线性化模态振型,建立一组可以表达整个响应域变形的统一模态振型;采用有理函数拟合,将频域非定常气动力转换到时域,分析不同间隙参数对应的极限环响应特性.结果表明:当全动翼面结构系统中存在间隙时,在低于线性颤振边界的特定飞行区域,翼面会出现非线性极限环振荡现象,间隙参数会影响极限环振荡幅值、频率以及极限环振荡的进入临界速压和发散临界速压....
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Published in | 航空工程进展 Vol. 13; no. 2; pp. 18 - 26 |
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Main Authors | , , , |
Format | Journal Article |
Language | Chinese |
Published |
航空工业成都飞机设计研究所 强度设计研究部,成都 610091
01.04.2022
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Subjects | |
Online Access | Get full text |
ISSN | 1674-8190 |
DOI | 10.16615/j.cnki.1674-8190.2022.02.03 |
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Abstract | V211.47; 战斗机全动翼面操纵系统中普遍存在间隙,其非线性特性不但影响系统地面振动试验数据的有效性,而且可能导致飞行器气动弹性稳定性边界产生偏差,因此有必要开展考虑间隙非线性的气动弹性响应分析研究.以全动翼面旋转方向间隙为研究对象,基于虚拟质量法线性化模态振型,建立一组可以表达整个响应域变形的统一模态振型;采用有理函数拟合,将频域非定常气动力转换到时域,分析不同间隙参数对应的极限环响应特性.结果表明:当全动翼面结构系统中存在间隙时,在低于线性颤振边界的特定飞行区域,翼面会出现非线性极限环振荡现象,间隙参数会影响极限环振荡幅值、频率以及极限环振荡的进入临界速压和发散临界速压. |
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AbstractList | V211.47; 战斗机全动翼面操纵系统中普遍存在间隙,其非线性特性不但影响系统地面振动试验数据的有效性,而且可能导致飞行器气动弹性稳定性边界产生偏差,因此有必要开展考虑间隙非线性的气动弹性响应分析研究.以全动翼面旋转方向间隙为研究对象,基于虚拟质量法线性化模态振型,建立一组可以表达整个响应域变形的统一模态振型;采用有理函数拟合,将频域非定常气动力转换到时域,分析不同间隙参数对应的极限环响应特性.结果表明:当全动翼面结构系统中存在间隙时,在低于线性颤振边界的特定飞行区域,翼面会出现非线性极限环振荡现象,间隙参数会影响极限环振荡幅值、频率以及极限环振荡的进入临界速压和发散临界速压. |
Author | 王斐 李秋彦 谭光辉 冉玉国 |
AuthorAffiliation | 航空工业成都飞机设计研究所 强度设计研究部,成都 610091 |
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Author_FL | WANG Fei LI Qiuyan RAN Yuguo TAN Guanghui |
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Keywords | 气动弹性;虚拟质量;间隙;极限环;动态响应 |
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Title | 全动翼面间隙非线性气动弹性响应分析 |
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