不同型线柔性轴承的性能分析及比较

陈曦; 袁重雨; 祁影霞

不同型线柔性轴承的性能分析及比较

上海理工大学能源与动力工程学院, 上海 200093

基金项目: 上海市教育委员会科研创新资助项目(10YZ96); 国家自然科学基金资助项目(50906054); 博士点新教师资助基金(20093120120006)

详细信息

中图分类号: TB 6
计量
- 文章访问数: 1702
- HTML全文浏览量: 235
- PDF下载量: 862
- 被引次数: 0
出版历程
- 收稿日期: 2011-07-26
- 网络出版日期: 2012-12-30

Performance analysis and comparison of flexure bearings with different profile lines

School of Energy & Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

摘要

摘要: 柔性轴承的应力分布及动态刚度特性对低温制冷机的整体可靠性尤为重要.以最大应力值、轴向刚度、径轴向刚度比为性能指标,对新设计的费马型线柔性轴承和其他两种柔性轴承进行对比研究.通过有限元分析,对比了三者之间应力分布、应力变化及刚度变化特性.设计制作了这3种不同型线的柔性轴承,并测试了3种柔性轴承的径轴向刚度,结果显示:费马型线柔性轴承的径轴向刚度之比最大,牛津型柔性轴承的径向刚度最小;费马柔性轴承的应力值最大,但最大应力值小于材料的疲劳应力,因此费马型线的柔性轴承在性能上优于其他两种柔性轴承.
- 直线压缩机 /
- 柔性轴承 /
- 实验研究 /
- 有限元分析
Abstract: It is crucial to analyze the performances of flexure bearings which would influence the overall reliability of cryocoolers. The performance parameters of flexure bearings include the stress distribution, axial stiffness, and dynamic radial stiffness and so on. The Fermat flexure bearing was designed, which was analyzed and compared with the other two kinds of flexure bearings in the above aspects by finite element method (FEM) and experimental study. The three flexure bearings were fabricated, and the axial stiffness and dynamic radial stiffness were tested individually. The testing results agree well with the finite element analysis (FEA) results. They indicate that the Fermat flexure bearing owns the highest stiffness ratio. The radial stiffness of the Oxford flexure bearing is minimum. The maximum stress value of the Fermat flexure is highest among the three flexures, but which falls well below the material fatigue limit stress. Hence, the Fermat flexure bearing is superior to other two kinds of flexure bearings.
- linear compressor /
- flexure bearing /
- experimental study /
- finite element analysis

HTML全文

参考文献(9)

[1]	Chen N,Chen X,Wu Y N.Spiral profile design and parameter analysis of flexure spring [J].Cryogenics,2006,46(6):409-419
[2]	Rawlings R M,Miskimins S M.Flexure springs applied to low-cost linear drive cryocoolers //2000 Infrared Technology and Applications XXVI.Bellingham:Society of Photo-Optical Instrumentation Engineers,2000:406-412
[3]	Meijiers M,Benschop A A J.Flexure bearing cryocoolers at Thales cryogenics //2002 Proceedings of the Cryogenic Engineering Conference.AIP Conference Proceedings.Madison:American Institute of Physics,2002:699-706
[4]	Wood J G,Lane N.Development of the Sunpower 35 we free-piston stirling convertor //2005 Proceedings of the Space Technology and Applications International Forum.Albuquerque:American Institute of Physics,2005:682-687
[5]	陈曦,刘颖,武卫东,等.柔性弹簧:中国,CN 101893050 A .2010 Chen Xi,Liu Ying,Wu Weidong,et al.Flexure spring:China,CN101893050 A .2010(in Chinese)
[6]	Gaunekar A S,Goddenhenrich T,Heiden C.Finite element analysis and testing of flexure bearing elements [J].Cryogenics,1996,36(5):359-364
[7]	陈曦,武卫东,周志刚.自由活塞斯特林制冷机间隙密封技术研究[J].低温与超导,2008,36(5):5-12 Chen Xi,Wu Weidong,Zhou Zhigang.Study on the clearance seal in free-piston Stirling cooler [J].Cryo & Supercond,2008,36(5):5-12(in Chinese)
[8]	Veprik A,Nachman I,Pundak N.Dynamically counter balanced single-piston linear compressor of a cryogenic cooler [J].Cryocoolers,2004,13:241-250
[9]	陈楠,陈曦,吴亦农,等.涡旋柔性弹簧型线设计及有限元分析[J].中国机械工程,2006,17(12):1261-1265 Chen Nan,Chen Xi,Wu Yinong,et al.Design and finite element analysis of spiral flexure spring [J].Chinese Journal of Mechanical Engineering,2006,17(12):1261-1265(in Chinese)