航天推进技术研究院主办
[1]赵剑,谭永华,陈建华,等.重型发动机S型波纹管承压与变形补偿结构参数敏感特性[J].火箭推进,2022,48(02):36-44.
ZHAO Jian,TAN Yonghua,CHEN Jianhua,et al.Sensitive characteristics of structural parameters of pressure bearing and deformation compensation of S-shaped bellows in heavy duty engine[J].Journal of Rocket Propulsion,2022,48(02):36-44.
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ZHAO Jian,TAN Yonghua,CHEN Jianhua,et al.Sensitive characteristics of structural parameters of pressure bearing and deformation compensation of S-shaped bellows in heavy duty engine[J].Journal of Rocket Propulsion,2022,48(02):36-44.
重型发动机S型波纹管承压与变形补偿结构参数敏感特性
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
48
期数:
2022年02期
页码:
36-44
栏目:
目次
出版日期:
2022-04-30
- Title:
- Sensitive characteristics of structural parameters of pressure bearing and deformation compensation of S-shaped bellows in heavy duty engine
- 文章编号:
- 1672-9374(2022)02-0036-09
- 分类号:
- V434.2
- 文献标志码:
- A
- 摘要:
- 我国500 tf级重型液氧煤油补燃循环发动机首次采用泵后摇摆的推力矢量总体布局,其中适用于高温、高压、富氧燃气服役环境的柔性摇摆组件是首先需要攻克的关键技术之一。针对摇摆组件的多层薄壁S型波纹管,为了获取其结构参数对承压能力、摇摆刚度等结构特性的影响,提出了一种基于正交试验设计理论、非线性有限元方法以及数理统计理论的结构参数敏感特性研究方法。该方法以OPTIMUS作为控制平台,基于参数化的非线性有限元仿真程序,对大样本的正交试验方案进行自动化分析,并通过相关性分析、主成分分析、方差分析以及单因子响应分析等方法处理数据信息,研究了不同影响因子对S形波纹管承压性能和位移补偿性能的影响规律,获得了各影响因子的敏感度信息。结果表明,层数和单层厚度对波纹管承压性能影响显著,波距和波峰半径的影响较小 波纹管轴向刚度随波数和层数的增加成双曲函数减小,波距的影响可忽略。
- Abstract:
- The overall layout of ‘swinging behind the pump which is used for thrust vector regulation is adopted in Chinas 500 tf LOX/kerosene staged combustion engine for the first time. Among them, the flexible swinging component suitable for high-temperature, high-pressure and oxygen enriched gas environment is one of the key technologies that need to be overcome firstly. In this paper, a research method of structural parameter sensitivity for the multi-layer thin-walled S-shaped bellows of swing assembly based on orthogonal experimental design theory, nonlinear finite element method and mathematical statistics theory was proposed. In order to obtain the influence of its structural parameters on the structural characteristics such as swing stiffness and stability. The OPTIMUS was used as the control platform in this method, where the orthogonal test scheme of large samples based on the parametric nonlinear finite element simulation program could be automatically analyzed, and the data information could also be processed through correlation analysis, principal component analysis, analysis of variance and single factor response analysis. The effects of different influence factors on the pressure bearing performance and displacement compensation performance of S-shaped bellows were studied, and the sensitivity information of each influence factor was obtained as well. The results show that the number of layers and the thickness of single layer have a significant effect on the pressure bearing performance of bellows, while the wave distance and peak radius have little effect. The axial stiffness of bellows decreases as a hyperbolic function with the increase of wave number and layer number, and the influence of wave distance can be ignored.
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备注/Memo
收稿日期:2022-02-01 修回日期:2022-03-11
基金项目:国家自然科学基金(u1967203)
作者简介:赵剑(1986—),男,博士,研究领域为液氧煤油发动机总体技术。
更新日期/Last Update:
1900-01-01