分置式斯特林制冷机力学环境分析  

The analysis on the dynamical environments of the split Stirling cryocooler

作　　者：杨坤 张铠 王飞 陆永达 傅斌 Yang Kun;Zhang Kai;Wang Fei;Lu Yongda;Fu Bin(The Provincial key Laboratory of Cryogenic Technology,The 16th Research Institute of CETC,Hefei 230088,China)

机构地区：[1]低温技术安徽省重点试验室,中国电子科技集团公司第十六研究所,合肥230088

出　　处：《低温与超导》2020年第4期19-23,共5页Cryogenics and Superconductivity

摘　　要：本文针对某型分置式斯特林制冷机,通过力学有限元分析,在随机振动和正弦振动的力学环境试验条件下寻找制冷机最大应力集中处,分析分置式制冷机在相关设计中存在的不足,以及可能导致制冷机失效的主要因素,进而提出优化制冷机的设计方法和预防措施。结果表明,通过增大分置管直径,可减少分置式斯特林制冷机最大集中应力,提高制冷机在实际使用的可靠性。Aiming at some type of split Stirling cryocooler,finite element mechanical analysis was applied to find the maximum stress raiser in condition of random vibration and sinusoidal vibration. Then the weak spots in the design of the split Stirling cryocooler and the main factors to possibly result in the failure of the split Stirling cryocooler were analysed. After that, the optimization method of the split Stirling cryocooler design and precautions was proposed. The results show that by increasing the diameter of the split tube, the maximum concentrated stress of the split Stirling cryocooler can be reduced, and the reliability of the Stirling cryocooler in the process of practical use can be improved.

关 键 词：斯特林制冷机 有限元分析 振动失效 优化 

分 类 号：TB663[一般工业技术—制冷工程]