曾惠华,刘钟坤.大展弦比机翼几何非线性颤振风洞试验研究[J].装备环境工程,2019,16(1):68-72. ZENG Hui-hua,LIU Zhong-kun.Geometrical Nonlinear Flutter Research of a High-aspect-ratio Wing through Wind Tunnel Test[J].Equipment Environmental Engineering,2019,16(1):68-72.
大展弦比机翼几何非线性颤振风洞试验研究
Geometrical Nonlinear Flutter Research of a High-aspect-ratio Wing through Wind Tunnel Test
投稿时间:2018-06-28  修订日期:2019-01-25
DOI:10.7643/ issn.1672-9242.2019.01.013
中文关键词:  大展弦比机翼  几何非线性  气动弹性  颤振
英文关键词:high-aspect-ratio wing  geometrical nonlinear  aeroelastic  flutter
基金项目:
作者单位
曾惠华 沈阳飞机设计研究所 结构动力学室,沈阳 110035 
刘钟坤 沈阳飞机设计研究所 结构动力学室,沈阳 110035 
AuthorInstitution
ZENG Hui-hua Shenyang Aircraft Design & Research Institute, Shenyang 110035, China 
LIU Zhong-kun Shenyang Aircraft Design & Research Institute, Shenyang 110035, China 
摘要点击次数:
全文下载次数:
中文摘要:
      目的 研究大展弦比机翼在飞行过程中,由于大变形造成几何非线性效应带来的几何非线性颤振问题。方法 针对几何非线性颤振问题,设计相应的风洞试验模型,并完成不同变形下的颤振风洞试验,对机翼不同变形下的试验结果进行比较,摸清其几何非线性颤振特性。结果 在几何非线性的影响下,机翼的颤振速度随着变形的增大而下降,并且发散模态及颤振频率都发生改变,大变形下的颤振速压下降到小变形时的71.7%。结论 在研究大柔性、大展弦比机翼的气动弹性特性时,必须考虑几何非线性效应的影响,否则其颤振特性结论会存在较大的误差。
英文摘要:
      Objective To research geometrical nonlinear flutter problem induced by geometrical nonlinear effects because of large structure deformation of high-aspect-ratio wing during flying. Method A wind tunnel test model corresponding to the ge-ometrical nonlinear flutter problem was designed to carry out wind tunnel test under different wing deformations, compare the test results and get the geometrical nonlinear flutter characteristics. Results Under the influences of geometrical nonlinear, the flutter speed was decreased with the increase of deformation. The divergency mode and flutter frequency were also changed because of the influence of geometrical nonlinear. In large deformation, flutter speed was decreased to 71.7 percent of small deformation. Conclusion When the aeroelastic character of high-aspect-ratio flexible wing is analyzed, the influence of geometrical nonlinear must be considered; otherwise it will cause large error for the conclusions of flutter character.
查看全文  查看/发表评论  下载PDF阅读器
关闭

关于我们 | 联系我们 | 投诉建议 | 隐私保护 | 用户协议

您是第11698186位访问者    渝ICP备15012534号-5

版权所有:《装备环境工程》编辑部 2014 All Rights Reserved

邮编:400039     电话:023-68792835    Email: zbhjgc@163.com

视频号 公众号