Damping characteristics of single-layer aluminum alloy reticulated spatial structures

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (24) : 119-127.

GUO Xiaonong，ZHANG Jindong，LUO Xiaoqun，WANG Li

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Abstract

Field modal tests were carried out on four single-layer aluminum alloy reticulated spatial structures to obtain the acceleration response of the structures. The modal parameters of acceleration response were identified and the damping ratio of aluminum alloy reticulated spatial structures was analyzed. The analysis results showed that as the acceleration amplitude increases, the damping characteristics of this type of structure presented three-stage change rule. The research results of this paper can provide references for the damping matrix construction, engineering design and dynamic analysis of similar structures.

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modal parameter identification / reticulated spatial structure / aluminum alloy structure / damping characteristics

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GUO Xiaonong，ZHANG Jindong，LUO Xiaoqun，WANG Li. Damping characteristics of single-layer aluminum alloy reticulated spatial structures[J]. Journal of Vibration and Shock, 2021, 40(24): 119-127

References

[1] 杨联萍, 韦申, 张其林. 铝合金空间网格结构研究现状及关键问题[J]. 建筑结构学报, 2013, 34(2): 1-19+60.
YANG Lan-ping, WEI Shen, ZHANG Qi-lin. Aluminum reticulated spatial structures: state of the art and key issues [J]. Journal of Building Structures, 2013, 34(2): 1-19+60.
[2] 郭小农, 王丽, 相阳, 等. 铝合金板式节点网壳阻尼特性试验研究[J]. 振动与冲击, 2016, 35(18): 34-39.
GUO Xiao-nong, WANG Li, XIANG Yang, et al. Experimental study on the damping property of aluminum alloy latticed shells with gusset joints [J]. Journal of Vibration and Shock, 2016, 35(18): 34-39.
[3] 罗晓群，张锦东，张晋，等. 铝合金单层球面网壳结构阻尼特性[J]. 湖南大学学报(自然科学版)，2020，47(07): 84-92.
LUO Xiao-qun, ZHANG Jin-dong, ZHANG Jin, et al. Damping Characteristics of Aluminum Alloy Single Layer Spherical Latticed Shell[J]. Journal of Hunan University (Natural Sciences), 2020, 47(07): 84-92.
[4] 马俊，李元齐. 钢结构建筑振动阻尼比与位移振幅相关性[J]. 同济大学学报(自然科学版)，2017，45(6)：13-19.
MA Jun, LI Yuan-qi, Correlation study between structural damping and displacement amplitude of steel structure buildings[J]. Journal of Tongji University (Natural Science), 2017, 45(6): 13-19.
[5] Bagheri A, Osman E O, Devin K H. Structural system identification based on variational mode decomposition[J]. Journal of Sound and Vibration, 2018, 417: 182—197．
[6] Prevosto M. Vibration and Vibration Description Recognition Algorithms for Complex Mechanical Structures [D]. University of Rennes 1, 1982.
[7] Cole H A. On-the-line analysis of random vibrations[J]. Proceedings of the National Academy of Sciences, 1997, 94(6): 2557-2562.
[8] Peeters B, DeRoeck G, Pollet T, et al. Stochastic subspace techniques applied to parameter identification of civil engineering structures [C]// Proceedings of the International Conference MV2, 1995.
[9] 禹丹江. 土木工程结构模态参数识别[D]. 福州：福州大学, 2006.
YU Dan-jiang. Modal parameter identification of civil engineering structures-theory, implementation and applications [D]. Fuzhou: Fuzhou University, 2006.
[10] Huang N E, Shen Z, Long S R, et al. The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis [J]. Proceedings of the Royal Society of London Series A: Mathematical, Physical and Engineering Sciences, 1998, 454(3): 903-995.
[11] CHEN G, WANG Z. A signal decomposition theorem with Hilbert transform and its application to narrowband time series with closely spaced frequency components [J]. Mechanical Systems and Signal Processing, 2012, 28(2): 258-279.
[12] 李晶，曹登庆，刘绍奎，等. 基于解析模态分解和希尔伯特变换的模态参数辨识新方法[J]. 振动与冲击，2016，35(1): 34-39.
LI Jing, CAO Deng-qing, LIU Shao-kui, et al. A new method for modal parameter identification based on analytical modal decomposition and Hilbert transformation[J]. Journal of Vibration and Shock, 2016, 35(1): 34-39.