巡天制冷模块隔振解锁装置设计与分析

Design and Analysis of Vibration Isolation and Unlocking Device for Sky Survey Refrigeration Module

摘要: 航天器在发射阶段和在轨运行阶段的力学环境存在有巨大差异，对于需要进行减振、隔振处理的单元模块，还需要设计解锁装置保证其发射工况时的结构安全。目前的研究大多是单独针对隔振装置或解锁装置进行的，但是两套装置是相互配合使用的，不应孤立研究。本文针对某巡天制冷模块，提出了一种包含层合阻尼隔振环和形状记忆合金解锁装置的隔振解锁装置设计方案，而后对其进行了仿真分析。分析结果表明，该装置的基频满足设计要求，隔振环的隔振效率达到95%以上。这些结果进一步表明，所涉及的隔振解锁装置能够满足设计要求，其刚度较大、减振效率高，同时也能为航天领域同类产品提供设计参考。

Abstract: There is a huge difference between the mechanical environment of the spacecraft during the launch phase and the orbiting phase. For the unit modules that need to be damped and isolated, it is also necessary to design an unlocking device to ensure the structural safety during launch. Most of the current researches are conducted solely on vibration isolation devices or unlocking devices, but the two sets of devices are used in conjunction with each other and should not be studied in isolation. In this paper, for a certain sky survey refrigeration module, a design scheme of vibration isolation unlocking device including laminated damping vibration isolation ring and memory alloy unlocking device is proposed, and then the simulation analysis is carried out. The analysis results show that the fundamental frequency of the device meets the design requirements, and the vibration isolation efficiency of the vibration isolation ring reaches more than 95%. These results further show that the vibration isolation unlocking device involved can meet the design requirements, with greater stiffness and high vibration reduction efficiency, and it can also provide design references for similar products in the aerospace field.