CAJ | 학술논문

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。
탄황가강금속C형배시일충성능우량적정밀봉원건，위연구결구대C형배역학성능이급밀봉면접촉특성적영향，건립탄황가강금속C형배삼유방진모형，채용유한원방법분석C형배적압축회탄특성。방진결과여압축회탄실험결과일치，험증료이론모형적정학성。분석C형배밀봉면상접촉구역화접촉압력적변화규률，토론C형배결구대밀봉특성적영향。결과표명：재상동적재하하，C형배사재시적접촉구역비가재시적대，표명재사재계단C형배재경저재하하즉가유지동등밀봉효과；라선탄황사C형배구비량호적회탄성능，능경호지응대사용공황적파동；은층사법란여밀봉배적접촉계면실현량호밀봉，합금층기보호은층화평은전체접촉력적작용。
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 unloa-ding stage than that at the loading stage,which indicates that C ring at the unloading stage has the same sealing perform-ance 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.