Volume 33 Issue 11
Nov.  2018
Turn off MathJax
Article Contents
Analysis of similar dynamic characteristics of vibro-acoustic experiment for elastic cavity[J]. Journal of Aerospace Power, 2018, 33(11): 2611-2619. doi: 10.13224/j.cnki.jasp.2018.11.006
Citation: Analysis of similar dynamic characteristics of vibro-acoustic experiment for elastic cavity[J]. Journal of Aerospace Power, 2018, 33(11): 2611-2619. doi: 10.13224/j.cnki.jasp.2018.11.006

Analysis of similar dynamic characteristics of vibro-acoustic experiment for elastic cavity

doi: 10.13224/j.cnki.jasp.2018.11.006
  • Received Date: 2017-07-05
  • Publish Date: 2018-11-28
  • In allusion to the vibro-acoustic experiments of cavity in wind tunnel, taking typical elastic cavity as the research object, dimensional analysis was adopted to establish the similitude relations of structural natural frequencies and dynamics for complete geometric similarity model. Combining the structural finite element theory, the similitude relations of structural natural frequencies and dynamics for incomplete geometric similarity model were established by introducing the complete geometric similarity model as intermediate model. Numerical simulations of natural frequencies and dynamics of scale-down elastic cavity model were carried out. According to the numerical results of scale-down model, the dynamic response results of full-scale model were predicted by the proposed similitude relations. Results showed that the predicted dynamic response curves were in coincidence with the actual numerical results, which verified the feasibility of the proposed similitude relations and also provided a theoretic guidance for structural design and vibro-acoustic experiments of scaled down elastic cavity model with similar dynamics. The analysis method of the established similitude relations can be applied to complex thin-wall structures.

     

  • loading
  • [1]
    杨党国.内埋武器舱气动声学特性与噪声抑制研究[D].绵阳:中国空气动力研究与发展中心,2010.YANG Dangguo.Studies on aeroacoustic characteristics and noise suppressions for internal weapon bays[D].Mianyang:China Aerodynamic Research and Development Center,2010.(in Chinese)
    [2]
    SHIEH C M,MORRIS P J.Comparison of two-and-three-dimensional turbulent cavity flows[R].AIAA-2001-0511,2001.
    [3]
    王显圣,杨党国,刘俊,等.弹性空腔流致噪声/振动特性实验研究[J].航空学报,2017,38(7):177-186.WANG Xiansheng,YANG Dangguo,LIU Jun,et al.Experimental study of interactions between aeroacoustic noise and structural vibrations in an elastic cavity flow[J].Acta Aeronautica et Astronautica Sinica,2017,38(7):177-186.(in Chinese)
    [4]
    MORTON J.Scaling of impact loaded carbon fiber composites[J].AIAA Journal,1988,26(8):989-994.
    [5]
    QIAN Y,SWANSON S R,NUISMER R J,et al.An experimental study of scaling rules for impact damage in fiber composites[J].Journal of Composite Materials,1990,24(5):559-570.
    [6]
    FROSTIG Y,SIMITSES G J.Structural similitude and scaling laws for sandwich beams[R].AIAA-2001-1280,2001.
    [7]
    REZAEEPAZHAND J,SIMITSES G J.Design of scaled down models for stability and vibration studies[R].AIAA 94-1572,1994.
    [8]
    REZAEEPAZHAND J,SIMITSES G J.Design of scaled down models for predicting shell vibration response[R].AIAA 95-1325,1995.
    [9]
    FRIEDMANN P P.Aeroelastic scaling for rotary-wing aircraft with applications[J].Journal of Fluids and Structures.2004,19(5):635-650.
    [10]
    陈喆,陈国平.相似理论和模型试验的结构动响应分析运用[J].振动、测试与诊断,2014,34(6):995-1000.CHEN Zhe,CHEN Guoping.Structural dynamic response analysis and application of similarity theory and modeling experiments[J].Journal of Vibration,Measurement and Diagnosis,2014,34(6):995-1000.(in Chinese)
    [11]
    罗忠,朱云鹏,韩清凯,等.薄板结构畸变模型的动力学相似设计及几何区间确定[J].航空发动机,2015,41(3):18-23.LUO Zhong,ZHU Yunpeng,HAN Qingkai,et al.Determination method of dynamic similitude and applicable structure size interval of distorted models for elastic thin plates[J].Aeroengine,2015,41(3):18-23.(in Chinese)
    [12]
    罗忠,郭健,朱云鹏,等.叶片动力学相似试验模型设计及其固有特性预测修正[J].航空动力学报,2015,30(7):1611-1617.LUO Zhong,GUO Jian,ZHU Yunpeng,et al.Design method and revising strategy of inherent characteristics for dynamic similarity test model of blade[J].Journal of Aerospace Power,2015,30(7):1611-1617.(in Chinese)
    [13]
    李斌,张玉杰,杨智春.阻尼不相似动力学模型的时域修正方法[J].航空学报,2012,33(3):463-469.LI Bin,ZHANG Yujie,YANG Zhichun.Updating method of the time history response for dynamic similitude models with dissimilar damping ratios[J].Acta Aeronautica et Astronautica Sinica,2012,33(3):463-469.(in Chinese)
    [14]
    孙宁.薄壁圆柱壳构件的相似动力学特性研究[D].沈阳:东北大学,2014.SUN Ning.Research of similar dynamic characteristics of thin walled cylindrical shell[D].Shenyang:Northeastern University,2014.(in Chinese)
    [15]
    谈庆明.量纲分析[M].合肥:中国科学技术大学出版社,2005.
    [16]
    朱伯芳.有限单元法原理与应用[M].北京:中国水利水电出版社,2009.
    [17]
    李东旭.高等结构动力学[M].北京:科学出版社,2010.
    [18]
    农绍宁,田光明,赵怀耘.多维激励下结构随机振动响应分析[J].装备环境工程,2013,10(2):124-128.NONG Shaoning,TIAN Guangming,ZHAO Huaiyun.Random vibration response analysis of structures under multi-dimensional excitation[J].Equipment Environmental Engineering,2013,10(2):124-128.(in Chinese)
    [19]
    曾昭扬,徐培忠,李未显.水流脉动压力下结构的随机振动分析[J].水利学报,1983,1(3):15-26.ZENG Zhaoyang,XU Peizhong,LI Weixian.Random vibration analysis of structures under flow fluctuating pressure[J].Journal of Hydraulic Engineering,1983,1(3):15-26.(in Chinese)
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (1052) PDF downloads(705) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return