CAJ | 학술논문

利用有限元分析软件ABAQUS对非理想形貌O形橡胶密封圈在不同密封间隙和介质压力下的变形与受力情况进行了分析研究,得出了相应的Von Mises应力与接触压力分布,并与理想形貌O形圈的情况进行了对比.结果表明:非理想形貌(错模、分模扯缩、分模飞边) O形圈在不同密封间隙和不同介质压力下的最大接触压力均大于介质压力,能够达到密封效果,但是其最大Von Mises应力均大于理想形貌O形圈的最大Von Mises应力,表明非理想形貌O形圈应力松弛现象越明显,容易出现裂纹,带有分模飞边形貌的O形圈Von Mises应力明显高于其他两种.
이용유한원분석연건ABAQUS대비이상형모O형상효밀봉권재불동밀봉간극화개질압력하적변형여수력정황진행료분석연구,득출료상응적Von Mises응력여접촉압력분포,병여이상형모O형권적정황진행료대비.결과표명:비이상형모(착모、분모차축、분모비변) O형권재불동밀봉간극화불동개질압력하적최대접촉압력균대우개질압력,능구체도밀봉효과,단시기최대Von Mises응력균대우이상형모O형권적최대Von Mises응력,표명비이상형모O형권응력송이현상월명현,용역출현렬문,대유분모비변형모적O형권Von Mises응력명현고우기타량충.
The rubber O-ring seals with surface defects are analyzed in different sealing gaps and oil pressure with program ABAQUS. The distributions of the Von Mises and the sealing surface contact stresses are discussed, after analyzing the deformation and stress, a compari-son is made with it in ideal surface condition. The results indicate that the max contact stresses of the O-ring seals with surface defects(mis-placement, notch, flash)exceed the medium pressure in different sealing gaps and oil pressure and it is guaranteed to seal absolutely. But the max Von Mises exceeding it in ideal surface condition shows that the phenomenon of stress relaxation with a defect will be more obvious and easier to crack. And during the three kinds of surface defects, the Von Mises of O-ring seals with flash defect is higher than the other two kinds .