充气膜结构的系留气球动力学性能试验研究
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摘要
由于系留气球为充气膜结构,即为全柔性体结构,使其模态测试难度大,国内对其试验模态研究基本处于空白状态。本文采用基于变时基技术的多输入多输出MIMO锤击法模态试验方法,对某系留气球进行模态测试,通过多种模态分析方法及结果校验,得到其模态参数(频率、阻尼比和振型)。为系留气球的动力学特性研究提供试验依据,同时为充气膜结构的模态测试领域提供新的试验案例。
The modal test of tethered balloon is very difficult due to its pneumatic membrane structure and full flexible body,and domestic research on the experimental modal test is basically in a blank state. In this paper, the model test of the tethered balloon is based on the Varied Time Based(VTB) technology and multiple input multiple output(MIMO) hammering method, and its modal parameters(frequency, damping ratio and mode shapes) is obtained according to a variety of modal analysis methods and the verified results. This paper supply experimental basis for the dynamics study of tethered balloons, and it provides a new test case in the field of pneumatic membrane structure modal test.
引文
[1]谢军.充气膜结构的褶皱及振动特性研究[D].哈尔滨:哈尔滨工业大学,2012.
    [2]沃德.模态分析理论与试验[M].北京:北京理工大学出版社,2001.
    [3]刘进明,应怀樵等MIMO频响函数和脉冲响应函数的精确算法[C].现代振动与噪声技术,2010,8(8):425-431.
    [4]应怀樵,沈松,等用锤击法和变时基技术进行黄河铁路桥的模态试验分析[M]//现代振动与噪声测试技术(第2卷).北京:航空工业出版社,2000.

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