Modal tests and analysis of SMPC deployable truss array antenna after repeated folding

被引：0
作者：
Wang X. [1 ]
Yang T. [1 ]
Zhang Y. [1 ]
Gao J. [1 ]
Chen W. [1 ]
Fang G. [2 ]
Xie C. [2 ]
Cao Z. [2 ]
Ma J. [2 ]
机构：
[1] Space Structure Research Center, Shanghai Jiao Tong University, Shanghai
[2] Institute of Aerospace System Engineering Shanghai, Shanghai
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2023年 / 42卷 / 04期
关键词：
acoustic structure interaction (ASI); deployable truss antenna; modal test; shape memory effects;
D O I：
10.13465/j.cnki.jvs.2023.04.036
中图分类号：
学科分类号：
摘要：
Shape memory composite (SMPC) is an intelligent material with promising applications in the aerospace field. Modal tests were conducted on a five-bay SMPC deployable truss array antenna after repeated folding and unfolding shape memory process, and the natural frequencies and mode shapes were obtained through modal parameter identification to investigate the influence of prestressed cable and array panel on structural dynamics. Results show that the prestressed cable can improve the overall stiffness and shear resistance of the truss antenna along the longitudinal direction, and the array panel can improve the torsional stiffness of the truss. An acoustic-structure interaction (ASI) finite element model which includes the effect of air on the array surface was established for the computational modal analysis, and the results are in good agreement with the modal test, indicating the accuracy of the simulation analysis method. © 2023 Chinese Vibration Engineering Society. All rights reserved.
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页码：306 / 311
页数：5
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