Wet Modal Analysis and Experimental Study on Pneumatic Empennage

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (15) : 140-143.

QIU Zhen-yu, CHEN Wu-jun, ZHAO Bing, CHEN Yu-feng

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Abstract

In order to analyze the modal characteristics of complex shape pneumatic empennage, based on the potential flow theory and pre-stressed rigid model, the analysis method to calculate the air added mass of the triangle element is proposed by using the equivalent area parameter of the triangle element. And a numerical procedure based on Abaqus UEL is developed in sequence. The benchmark experiment of the circular membrane demonstrates the validity of the method, and the analyses and experiments on the complex shape pneumatic empennage show that the analysis method can get precise results. This paper is valuable to investigate the modal behavior of other complex shape pneumatic structures such as airship.

Key words

Pneumatic empennage / Air added mass / UEL / Dry mode / Wet mode

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QIU Zhen-yu, CHEN Wu-jun, ZHAO Bing, CHEN Yu-feng. Wet Modal Analysis and Experimental Study on Pneumatic Empennage[J]. Journal of Vibration and Shock, 2016, 35(15): 140-143

References

[1] Pramila A. Sheet flutter and the interaction between sheet and air [J]. TAPPI Journal. 1986, 69 (7): 70-4.
[2] Miles J W. On the aerodynamic instability of thin panels [J]. Journal of the Aeronautical Sciences 2012, 23 (8).
[3] Dowell E, DUGUNDII J, Perkin B. Subsonic flutter of panels on continuous elastic foundations [J]. Journal of American Institute o f Aeronautics and Astronautics. 1963, 1 (5): 1146-54.
[4] Wu T. Hydromechanics of swimming propulsion. Part 3. Swimming and optimum movements of slender fish with side fins [J]. Journal of Fluid Mechanics. 1971, 46 (03): 545-68.
[5] Minami H. Added mass of a membrane vibrating at finite amplitude [J]. Journal of Fluids and Structures. 1998, 12 (7): 919-32.
[6] Kornecki A, Dowell E, O'Brien J. On the aeroelastic instability of two-dimensional panels in uniform incompressible flow [J]. Journal of Sound and Vibration. 1976, 47 (2): 163-78.
[7] Lucey A, Carpenter P. The hydroelastic stability of three-dimensional disturbances of a finite compliant wall [J]. Journal of Sound and Vibration. 1993, 165 (3): 527-52.
[8] Sygulski R. Numerical analysis of membrane stability in air flow [J]. Journal of Sound and Vibration. 1997, 201 (3): 281-92.
[9] Sewall JL, Miserentino R, Pappa RS. Vibration studies of a lightweight three-sided membrane suitable for space application: National Aeronautics and Space Administration, Scientific and Technical Information Branch; 1983.
[10] Li Y Q, Wang L, Shen Z Y, etc. Added-mass estimation of flat membranes vibrating in still air [J]. Journal of Wind Engineering and Industrial Aerodynamics. 2011, 99 (8): 815-24.
[11] Kinsler L E, Frey A R. Fundamentals of Acoustics [M]. New York: Von Nostrand Reinhold Company, 1979.
[12] 孙晓颖，陈昭庆，武岳.单向张拉膜结构气弹模型试验研究[J]. 建筑结构学报，2013，34(11)：63-69.
SUN Xiaoying, CHEN Zhaoqing, WU Yue. Aeroelastic experiment of one-way tensionedmembrane structure [J]. Journal of Building Structures, 2013, 34(11):63-69.
[13] 卢旦，楼文娟，杨毅. 索膜结构风致流固耦合气动阻尼效应研究[J]. 振动与冲击，2013，,32（6）：47-53.
LU Dan, LOU Wen-juan, YANG Yi. Numerical calculation on wind-induced damping of membranestructure based on fluid-structure interaction[J]. Journal of vibration and shock, 2013,32(6):47-53.
[14] 陈宇峰，陈务军，何艳丽，等. 柔性飞艇主气囊干湿模态分析与影响因素[J].上海交通大学学报，2014，48（2）:234-238，243.
CHEN Yu-feng, CHEN Wu-jun, HE Yan-li,etc. Dry and Wet Modal Analysis and Evaluation of Influencing Factors for Flexible Airship Envelop[J]. Journal of Shanghai Jiao Tong University, 2014, 48(2):234-238,243.
[15]孙芳锦，余磊，张大明. 基于模态转换的降阶模型在风与膜结构耦合分析的应用研究[J]. 地震工程与工程振动，2015,35（1）：199-205.
SUN Fangjin, YU Lei, ZHANG Daming. Study on application of reducing order models in wind-membrane interaction based on modal transformation [J]. Earthquake engineering and engineering dynamics, 2015,35(1):199-205.