摘要: |
准光系统作为新一代微波有效载荷,在越来越多卫星上得以应用。针对某型准光载荷初始结构建立有限元模型,计算固有模态和正弦响应,通过动力学仿真发现结构设计上的不足,在保证电性能的前提下改进优化结构构型,通过力学仿真证明,优化后的结构拥有更好的力学性能,可以满足宇航产品的性能要求。计算结果可以为准光结构后续设计、改进及在轨安全性可靠性评估提供依据。 |
关键词: 有效载荷;准光结构;有限元模型;固有模态;正弦响应 |
基金项目: |
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Design and Optimization of A Quasi-optical Structure Based on Dynamic Simulation |
Geng Shengwei Liu Mingli Liu Pengfei Ye Zhibiao Xiong Yifan
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Shanghai Institute of Aerospace Electronic Communication Equipment, Shanghai 201109
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Abstract: |
As a new generation of payload, quasi-optical system has been applied to more and more satellites. This article constructed a finite element model (FEM) of quasi-optical system, then calculated the characteristic mode and sine response of the structure, and finally optimized the structure by dynamics simulation without spoiling electronic performance. Results can offer a reference for design and improvement of quasi-optical structure, and can also be used to assess the security and reliability. |
Key words: payload;quasi-optical structure;finite element model;characteristic mode;sine response |