基于液态金属的锁紧/解锁装置在空间展开机构中的应用  

Application of Locking/Unlocking Device Based on Liquid Metal in Space Deployable Mechanism

作　　者：尚立斌 王安平[2] 王珂[2] 何志祝[3] SHANG Libin;WANG Anping;WANG Ke;HE Zhizhu(University of Chinese Academy of Science, Beijing 100049,China;Key Laboratory of Space Utilization Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing 100094,China;Technical Institute of Physics and Chemistry, Chinese Academy of Science, Beijing 100090, China)

机构地区：[1]中国科学院大学,北京100049 [2]中国科学院太空应用重点实验室,中国科学院空间应用工程与技术中心,北京100094 [3]中国科学院理化技术研究所,北京100090

出　　处：《载人航天》2017年第4期572-576,共5页Manned Spaceflight

基　　金：载人航天预先研究项目(010701)

摘　　要：针对空间可展开机构中使用爆炸螺栓有明显冲击振动缺点的问题,基于液态金属合金材料熔点较低、合金成分可调、材料性质可设计的特性,提出了将液态金属应用于空间可展开机构的锁紧/解锁装置设计中。初步设计了一种锁紧/解锁机构,对设计的机构进行了仿真失效分析,指出该机构在低于2300 N承载力下有着较好的锁紧能力;设计了拉伸承力试验,得到可承受的拉伸应力会大于19.2 MPa的结论,且设计了对锁紧/解锁装置的加热试验,该试验证明机构可顺利解锁。由此初步得出了液态金属可以在空间可展开机构上得到应用的结论,为液态金属在进一步的实际工程应用中提供参考。The defect of the explosive bolt is the obvious impact on the space deployable mecha-nism.Based on the feature of low melting point,adjustable alloy composition and material property of the liquid metal alloy,the application of liquid metal in the design of the space deployable mecha-nism was proposed.The corresponding lockin^^unlocking device was designed and the failure proba-bility of the design was analyzed by simulation.It was found that the device had better locking capa-bility when then load was smaller than2300N.The tensile experiment was conducted and the results showed that the tensile stress was greater than19.2MPa.The heating test of the locking/unlocking device was also designed and the test results showed that the mechanism could be unlocked successful-ly.It was concluded that the liquid metal could be applied in the space deployable mechanism,which may provide reference for further application of the liquid metal in engineering practice.

关 键 词：空间可展开机构 液态金属 结构设计 锁紧/解锁装置 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]