一种轻质大柔性索网结构模态测试技术

杜大华; 贺尔铭; 王辉; 黄红

doi:10.13433/j.cnki.1003-8728.20180113

一种轻质大柔性索网结构模态测试技术

doi: 10.13433/j.cnki.1003-8728.20180113

杜大华^1,2,
贺尔铭^1, ,,
王辉³,
黄红²

1.
西北工业大学航空学院, 西安 710072;
2.
液体火箭发动机技术国防科技重点实验室, 西安 710100;
3.
西安空间无线电技术研究所, 西安 710100

基金项目:

国家自然科学基金青年基金项目（11702204）与装备预研共用技术和应用基础项目（2017ZZB·

YY4001Da）资助

详细信息

作者简介:
杜大华(1977-),博士研究生,研究方向为结构强度、振动与可靠性,cascddh@sina.com

通讯作者:
贺尔铭,教授,博士生导师,heerming@nwpu.edu.cn

计量
- 文章访问数: 1043
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- 被引次数: 0
出版历程
- 收稿日期: 2017-07-02
- 刊出日期: 2018-08-05

A New Modal Testing Technique for Light-weight Large Flexible Cable-net Structure

Du Dahua^1,2,
He Erming^{1
, ,},
Wang Hui³,
Huang Hong²

1.
College of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2.
National Key Laboratory of Science and Technology on Liquid Rocket Engine, Xi'an 710100, China;
3.
Xi'an Institute of Space Radio Technology, Xi'an 710100, China

摘要

摘要: 针对轻质大柔度空间索网天线的结构特点及其动力学特性，提出了一种适合于该类索网结构的模态测试技术。设计了一套适用于索网结构激励的非接触气动激振系统，采用三维扫描激光测振系统（3D SLDV）进行非接触振动测量，并利用随机减量技术（RDT）及Ibrahim时域法（ITD）识别结构的模态参数。研究表明，运用本试验方法成功进行了索网结构振动模态测试，拓展了常规的模态试验手段，具有广阔的推广应用价值。
- 非接触激励 /
- 三维扫描 /
- 激光测振 /
- 柔性索网 /
- 模态测试
Abstract: According to the structural features and dynamics characteristics of light-weight large flexible space cable-net antenna, a new modal testing technique is proposed in this study. A non-contact pneumatic excitation system is designed and applied to excite vibration, which is suitable for cable-net structure. The 3D scanning laser Doppler vibrometer (3D SLDV) is used to conduct non-contact vibration measurement. The structural modal parameters of cable-net antenna are identified based on the time domain modal analysis method of random decrement technique (RDT) combined with Ibrahim time domain method (ITD). As an extension to conventional modal test methods, the current technique has successfully obtained the vibration modes of a light-weight large flexible cable-net structure, showing a promising prospect of applications.
- Non-contact excitation /
- 3-D scanning /
- laser Doppler vibrometer /
- flexible cable-net /
- modal test

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参考文献(15)

[1]	王辉,宋燕平,马小飞.星载大型柔性索网天线重力环境下的型面调试[J].中国空间科学技术,2016,36(4):33-37 Wang H, Song Y P, Ma X F. Surface accuracy adjusting method of large flexible mesh spaceborne antenna on ground[J]. Chinese Space Science and Technology, 2016,36(4):33-37(in Chinese)
[2]	周志成,曲广吉.星载大型网状天线非线性结构系统有限元分析[J].航天器工程,2008,17(6):33-38 Zhou Z C, Qu G J. Nonlinear finite element analysis of large mesh deployable antenna on satellite[J]. Spacecraft Engineering, 2008,17(6):33-38(in Chinese)
[3]	刘福寿.大型空间结构动力学等效建模与振动控制研究[D].南京:南京航空航天大学,2015 Liu F S. Dynamic equivalent modeling and vibration control of large space structures[D]. Nanjing:Nanjing University of Aeronautics and Astronautics, 2015(in Chinese)
[4]	邱慧,李潇,樊俊峰,等.航天器平面薄膜结构模态分析和试验[J].航天器工程,2017,26(3):43-49 Qiu H, Li X, Fan J F, et al. Modal analysis and experiment of spacecraft flat membrane structures[J]. Spacecraft Engineering, 2017,26(3):43-49(in Chinese)
[5]	Levine-West M B, Salamat M A. Mode localization experiments on a ribbed antenna[J]. AIAA Journal, 1993,31(10):1929-1937
[6]	刘占辉.网壳结构振动模态局部化与跃迁问题研究[D].哈尔滨:哈尔滨工业大学,2015 Liu Z H. Research on vibration mode localization and mode jumping of reticulated shells[D]. Harbin:Harbin Institute of Technology, 2015(in Chinese)
[7]	郑光亮,陈怀海,贺旭东.激光测振方法在振动试验中的应用[J].振动、测试与诊断,2013,33(S1):45-47 Zheng G L, Chen H H, He X D. Application of laser vibrometer in vibration test[J]. Journal of Vibration, Measurement & Diagnosis, 2013,33(S1):45-47(in Chinese)
[8]	Yan S, Li B, Li F, et al. Finite element model updating of liquid rocket engine nozzle based on modal test results obtained from 3-D SLDV technique[J]. Aerospace Science and Technology, 2017,69:412-418
[9]	Martarelli M, Revel G M, Santolini C. Automated modal analysis by scanning laser vibrometry:problems and uncertainties associated with the scanning system calibration[J]. Mechanical Systems and Signal Processing, 2001,15(3):581-601
[10]	蔡劭佳,王飞.应用激光测振技术提高模态试验测量准确度[J].宇航计测技术,2012,32(6):13-16 Cai S J, Wang F. Improving the modal measure accuracy by the laser vibration technique[J]. Journal of Astronautic Metrology and Measurement, 2012,32(6):13-16(in Chinese)
[11]	Oliver D E, Schuessler M. Fully automated robot-based 3-dimensional vibration measurement system for modal analysis and structural health monitoring[C]//Proceedings of the IMAC-XXVⅡ. Orlando:Society for Experimental Mechanics Inc., 2009
[12]	Gade S, Moller N B, Jacobsen N, et al. Modal analysis using a scanning laser Doppler vibrometer[C]. 2002 IMAC-XX:Conference &&xposition on Structural Dynamics. Los Angeles, USA, 2002
[13]	Doupe C C, Swenson E D, George L E, et al. Finite element model tuning with 3D mode shapes from FalconSAT-5[C]//Proceedings of the 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Palm Springs:AIAA, 2009
[14]	刘景云,孙涛,彭博,等.一种鱼雷涡轮机叶轮和叶片模态试验技术[J].水下无人系统学报,2017,25(2):94-100 Liu J Y, Sun T, Peng B, et al. A modal test technology of impeller and blade for torpedo turbine[J]. Journal of Unmanned Undersea Systems, 2017,25(2):94-100(in Chinese)
[15]	李晖,孙伟,许卓,等.基于激光旋转扫描的约束态薄壁圆柱壳模态振型测试新方法[J].振动与冲击,2014,33(16):155-159 Li H, Sun W, Xu Z, et al. Experimental method of laser rotating sanning to measure mode shapes of constrained thin cylindrical shell[J]. Journal of Vibration and Shock, 2014,33(16):155-159(in Chinese)