文章摘要
贾晓红,陈华明,励行根,宋 炜.金属C形环力学性能及密封特性分析[J].润滑与密封,2014,39(11):1-5
金属C形环力学性能及密封特性分析
  
DOI:10.3969/j.issn.0254-0150.2014.11.001
中文关键词: 金属C形环  螺旋弹簧  压缩回弹特性  接触压力
英文关键词: metallic C ring  coil spring  compression-resilience  contact pressure
基金项目:国家科技重大专项(2014ZX06002008).
作者单位E-mail
贾晓红 清华大学摩擦学国家重点实验室 jiaxh.tsinghua@gmail.com 
陈华明 清华大学摩擦学国家重点实验室  
励行根 宁波天生密封件有限公司  
宋 炜 宁波天生密封件有限公司  
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中文摘要:
      弹簧加强金属C形环是一种性能优良的静密封元件,为研究结构对C形环力学性能以及密封面接触特性的影响,建立弹簧加强金属C形环三维仿真模型,采用有限元方法分析C形环的压缩回弹特性。仿真结果与压缩回弹实验结果一致,验证了理论模型的正确性。分析C形环密封面上接触区域和接触压力的变化规律,讨论C形环结构对密封特性的影响。结果表明:在相同的载荷下,C形环卸载时的接触区域比加载时的大,表明在卸载阶段C形环在更低载荷下即可维持同等密封效果;螺旋弹簧使C形环具备良好的回弹性能,能更好地应对使用工况的波动;银层使法兰与密封环的接触界面实现良好密封,合金层起保护银层和平稳传递接触力的作用。
英文摘要:
      Spring energized metal C ring is an excellent static sealing component. To study the structural effects on C ring’s mechanical properties and contact performance of the sealing interface, a three-dimensional model of the C ring was established and its mechanical properties and sealing mechanism were analyzed by finite elements method. The simulation results were validated by the compression-resilience test.Results show that the contact area of C ring is larger at the unloading stage than that at the loading stage, which indicates that C ring at the unloading stage has the same sealing performance under a relatively lower load. The coil spring offers C ring a good compression-resilience property to response to the fluctuation in working condition. The silver lining makes a good match between the contact interfaces of flange and C ring. The alloy lining plays a role in protecting the silvering lining and transmitting the contact force smoothly.
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