Abstract
In response to the requirements of lightweight and strong vibration resistance of a large airborne radar antenna, the optimization design of mechanics and the evaluation of dynamic strength were carried out. Based on topology optimization technology and size optimization technology, the mounting bracket and frame were optimized, and the optimal configuration and thickness distribution of the structure were obtained. For the optimized model, comparative analysis and experimental verification of the dynamic structural rigidity were carried out. The results show that the optimized structural model has been significantly improved in terms of structural frequency, dynamic strength, and lightweight level; successfully solved the problem of the original design model's stress intensity and the coupling resonance of the main modal frequency and environmental conditions. Based on the optimized model, the antenna prototype successfully passed the 9-h/axial durability vibration test, and the antenna structure optimization achieved relatively ideal results.
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Han, Y., Jiang, W., Wang, J., et al.: Multi-functional sandwich structure with metamaterial antenna lattice cores: protection, radiation and absorption. IET Microw. Antennas Propag. 14(7), 593–599 (2020)
Siriguleng, B., Zhang, W., Liu, T., et al.: Vibration modal experiments and modal interactions of a large space deployable antenna with carbon fiber material and ring-truss structure. Eng. Struct. 207, 109932 (2020)
Fu, J., Li, H., Gao, L., et al.: Design of shell-infill structures by a multiscale level set topology optimization method. Comput. Struct. 212, 162–172 (2019)
Fritzen, F., Xia, L., Leuschner, M., et al.: Topology optimization of multiscale elastoviscoplastic structures. Int. J. Numer. Meth. Eng. 106(6), 430–453 (2016)
Ichige, R., Kuriyama, N., Umino, Y., et al.: Size optimization of metamaterial structure for elastic layer of a piezoelectric vibration energy harvester. Sens. Actuators, A 318, 112488 (2021)
Liu, X., Zhang, H., Lv, L., et al.: Vibration control of a membrane antenna structure using cable actuators. J. Franklin Inst. 355(5), 2424–2435 (2018)
Liu, X., Cai, G., Peng, F., et al.: Dynamic model and active vibration control of a membrane antenna structure. J. Vib. Control 24(18), 4282–4296 (2018)
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Supported by Heifei Municipal Natural Science Foundation (No. 2021044).
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Peng, C., Yang, S., Shi, H. (2022). Optimization Analysis and Performance Evaluation of an Airborne Radar Antenna. In: Duan, B., Umeda, K., Kim, Cw. (eds) Proceedings of the Eighth Asia International Symposium on Mechatronics. Lecture Notes in Electrical Engineering, vol 885. Springer, Singapore. https://doi.org/10.1007/978-981-19-1309-9_160
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DOI: https://doi.org/10.1007/978-981-19-1309-9_160
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