辐射制冷器用纤维支撑系统的工程化研究

摘要

以辐射制冷器级间纤维支撑系统为研究对象,介绍了一种新型支撑方式,进一步解决了纤维支撑系统的工程化应用.利用Ansys有限元软件对系统进行准静态结构强度分析,并获得纤维绳的预紧力.设计加工了一套试验件,经力学振动试验,验证了纤维支撑系统结构设计和分析方法是合理的.该系统的一阶固有频率达120 Hz以上,被吊装的二级组件约2 kg,为研制更大冷量的辐射制冷器奠定了技术基础,也为多元多组件红外探测器提供一个稳定的低温平台.%Base on the fiber support system( FSS)of radiant cooling, a new structural support form was introduced to help realizing engineering application for FSS. The static analysis of FSS was accomplished u-sing Ansys software and the amount of pre-tension on fibers was predicted. Vibration test was conducted and the results indicate that the structure design and analytical method are reasonable. The system supports a subassembly of about 2 kg in weight and has a first natural frequency of 120 Hz. The system can enhance the radiant coolers' cooling capability and provide a stable low temperature platform for multi-element infrared detectors.