|
| O形密封圈沟槽底角对密封性能的影响 |
| Influence of O-ring groove bottom angle on sealing performance |
| 投稿时间：2019-03-06 |
| DOI： |
| 中文关键词: O形密封圈 密封性能 沟槽底角 Von Mises应力 接触压力 有限元分析 |
| 英文关键词: O-ring sealing performance groove bottom angle Von Mises stress contact pressure finite element analysis |
| 基金项目:国家自然科学基金资助项目(51475338). |
| 作者 | 单位 | E-mail | | 许浩 | 1.武汉科技大学冶金装备及其控制教育部重点实验室,湖北 武汉,430081
2.武汉科技大学机械自动化学院,湖北 武汉,430081 | 799952643@qq.com | | 曾良才 | 1.武汉科技大学冶金装备及其控制教育部重点实验室,湖北 武汉,430081
2.武汉科技大学机械自动化学院,湖北 武汉,430081 | | | 湛从昌 | 1.武汉科技大学冶金装备及其控制教育部重点实验室,湖北 武汉,430081
2.武汉科技大学机械自动化学院,湖北 武汉,430081 | |
|
| 摘要点击次数: 4021 |
| 全文下载次数: 2475 |
| 中文摘要: |
| 基于三重非线性理论,运用ANSYS Workbench软件,研究O形密封圈沟槽底角对密封性能的影响。在沟槽底角a分别取80°、90°和100°的条件下,仿真分析了介质压力和摩擦系数变化时O形圈的Von Mises应力和接触压力分布情况,以此为O形圈密封性能的判定依据。结果表明,在一定的初始压缩率(ε=15%)和摩擦系数(f=0.1)条件下,沟槽底角不同时O形密封圈的最大Von Mises应力和最大接触压力都随着介质压力的升高而增大,其中a=80°和a=100°时的Von Mises应力变化基本相同,且始终大于a=90°时的对应值；与其他两种沟槽底角相比,a=100°时O形圈主密封面上的最大接触压力较大,密封性能更好；在一定介质压力下,沟槽底角不同时O形密封圈在3个密封面上的最大接触压力都随着摩擦系数的增大而先降后升,但始终大于介质压力,从而可以确保其密封性能良好。 |
| 英文摘要: |
| Based on triple nonlinear theory, the influence of groove bottom angle of O-ring on its sealing performance was studied by using ANSYS Workbench software. Under the condition that the groove bottom angle a is 80°, 90° and 100°, respectively, the distributions of Von Mises stress and contact pressure of O-rings were analyzed with the changing of medium pressure and friction coefficient, and then were taken as the criteria of O-ring’s sealing performance. Simulation results show that, when the initial compression ratio ε=15% and friction coefficient f=0.1, the maximum Von Mises stress and contact pressure of O-rings at different groove bottom angles increase with increasing medium pressure, and Von Mises stress values at a=80° and a=100° are almost the same, which are always larger than that at a=90°. The maximum contact pressure on the main sealing surface is higher and the sealing performance is better when a=100°. Under a certain medium pressure, the maximum contact pressures on all three sealing surfaces of O-rings at different groove bottom angles drop at first and then rise with increasing friction coefficient, but are always higher than the medium pressure, which can ensure the good sealing performance of O-rings. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
