CAJ | 학술논문

为了研究不同结构参数对U形金属密封环密封性能的影响规律，利用ABAQUS软件建立某U形金属密封环的二维轴对称模型，在常温预紧工况和低温工作工况下计算分析U形密封环厚度、截面宽度、腿部厚度以及圆弧半径等结构参数对密封环最大Von Mises应力、接触压力大小及其分布以及接触宽度的影响。结果表明，将U形环厚度增大为3.8 mm、腿部厚度减小为0.1 mm时，U形环密封性能提高；取截面宽度在6.4～6.8 mm之间、圆弧半径在0.7～0.9 mm之间，均能获得较好的密封性。根据计算结果，针对加载后U形密封环腿部出现翘曲的现象，提出了减小U形环腿部右端高度的改进方法。
위료연구불동결구삼수대U형금속밀봉배밀봉성능적영향규률，이용ABAQUS연건건립모U형금속밀봉배적이유축대칭모형，재상온예긴공황화저온공작공황하계산분석U형밀봉배후도、절면관도、퇴부후도이급원호반경등결구삼수대밀봉배최대Von Mises응력、접촉압력대소급기분포이급접촉관도적영향。결과표명，장U형배후도증대위3.8 mm、퇴부후도감소위0.1 mm시，U형배밀봉성능제고；취절면관도재6.4～6.8 mm지간、원호반경재0.7～0.9 mm지간，균능획득교호적밀봉성。근거계산결과，침대가재후U형밀봉배퇴부출현교곡적현상，제출료감소U형배퇴부우단고도적개진방법。
To study the influence of structure parameters on the sealing performance of U-shaped metal sealing ring, ABAQUS was used to establish the two-dimensional axisymmetric finite element model of the metal sealing U-ring. Influ-ence on the max Von Mises stress,the size and distribution of the contact pressure and the contact width under normal temperature and in working condition resulted from changes of structure parameters such as the thickness,section width, leg thickness and arc radius,were analyzed. The results show that the sealing performance is improved by increasing the thickness of original U-shaped sealing ring to 3.8 mm or reducing the leg thickness to 0.1 mm,and good sealing perform-ance are achieved when keeping values of the section width between 6.4 mm and 6.8 mm and the arc radius between 0.7 mm and 0.9 mm. In the light of warping problem of the legs of the U-shaped sealing ring after loading,an improvement method that reduces the right leg height of the U-shaped sealing ring is proposed according to the calculation results.