空间望远镜用黏滞液体阻尼隔振器研究

为抑制卫星平台对天基望远镜的扰动, 需进行减振设计. 设计了一种空间望远镜用黏滞液体阻尼隔振器, 具有密封可靠、空间环境适应性好等特点. 根据流固耦合相关理论建立阻尼参数模型, 在此基础上实现了隔振器结构设计, 并对核心元件弹簧片进行参数优化设计, 加工制作出一套原理样机. 对该样机的刚度和阻尼性能进行了仿真分析和实验测试. 结果表明, 该隔振器的刚度特性和阻尼特性理论分析结果均与实验结果吻合较好, 说明模型较为准确, 具有工程设计指导价值.

Research of Viscous Fluid Damping Isolator Used in Space Telescope

In order to suppress infrared telescope astronomy disturbance caused by the satellite payload, it is needed to design vibration reduction device for the telescope. Therefor a viscous fluid damper used in space is designed, which could be sealed reliably and adapted to the space environment well. Firstly, a damping calculation model based on the theory of fluid mechanics is built. Then, the structure of the damper is designed, and parameters of the spring sheet which was a core component belonging to the damper, are optimized. A set of prototype was manufactured, and a finite element model of the vibration isolation system was created to get the system's first two models. Finally, the simulation results are compared with the experimental results. According to the analysis results, it can be seen that the damper's stiffness characteristics and damping characteristics can meet the design requirement. The theory analysis results coincide with the experimental results, which proves that the finite element model is precise and the prototype has guidance value in engineering design.