Performance analysis of globe-cone sealing considering stress relaxation effect

WANG Li; SUN Hengchao; SUN Wei; QI Lei; SUN Lichen; MENG Donghui

doi:10.11918/201901186

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Performance analysis of globe-cone sealing considering stress relaxation effect

更新时间：2026-10-19

- Performance analysis of globe-cone sealing considering stress relaxation effect
- Vol. 52, Issue 1, Pages: 156-162(2020)
- 作者机构：
  
  1. 北京卫星环境工程研究所,北京,100094
  2. Beijing Institute of Spacecraft Environment Engineering,Beijing,China,100094
  3. 中国空间技术研究院通信卫星事业部,北京,100094
- 作者简介：
- 基金信息：
- DOI：10.11918/201901186
  CLC： TH122
- Published：2020
- 稿件说明：
移动端阅览
WANG Li, SUN Hengchao, SUN Wei, et al. Performance analysis of globe-cone sealing considering stress relaxation effect[J]. 2020, 52(1): 156-162.
DOI：

WANG Li, SUN Hengchao, SUN Wei, et al. Performance analysis of globe-cone sealing considering stress relaxation effect[J]. 2020, 52(1): 156-162. DOI： 10.11918/201901186.

摘要

建立了考虑应力松弛效应的球头-锥面密封有限元模型

并采用这一模型获得螺母残余预紧应力及球头-锥面间接触应力随蠕变时间的变化规律. 在此基础上

依据Roth提出的泄漏模型推导出考虑应力松弛效应下球头-锥面密封泄漏率的计算公式

并采用这一公式获得不同工况参数下考虑应力-松弛效应的球头-锥面密封泄漏率随蠕变时间的变化规律. 本文在球头-锥面密封性能分析中实现了应力松弛效应影响的嵌入

这一研究不仅有助于球头-锥面密封性能分析技术在其工程分析设计中的实用化

也在一定程度上对球头-锥面密封性能研究理论体系和方法有所完善.

Abstract

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.

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