Performance analysis of globe-cone sealing considering stress relaxation effect

被引：0
|
作者：
Wang L. [1 ]
Sun H. [2 ]
Sun W. [1 ]
Qi L. [1 ]
Sun L. [1 ]
Meng D. [1 ]
机构：
[1] Beijing Institute of Spacecraft Environment Engineering, Beijing
[2] Institute of Telecommunication Satellite, China Academy of Space Technology, Beijing
来源：
Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology | 2020年 / 52卷 / 01期
关键词：
Contact pressure; Globe-cone sealing; Leakage rate; Residual preload force; Satellite propulsion system; Stress relaxation effect;
D O I：
10.11918/201901186
中图分类号：
学科分类号：
摘要：
When globe-cone sealing has long storage or working requirement, it is necessary to consider the effect of stress relaxation on the globe-cone seal performance. Based on this, a finite element model of globe-cone sealing considering stress relaxation is established, and the law of the nut residual preload force and the contact stress between globe and cone is obtained with increasing creep time by this model. Then the calculating formulas of globe-cone seal leakage rate are presented by the leakage model which is presented by Roth considering stress relaxation effect, and the law of leakage rate is obtained with increasing creep time under different working parameters. The effect of stress relaxation on globe-cone seal performance is analyzed in the paper, which would be practical in the engineering design, and also improve the theory system and method about globe-cone seal performance analysis in a certain extent. © 2020, Editorial Board of Journal of Harbin Institute of Technology. All right reserved.
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页码：156 / 162
页数：6
相关论文
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