航天推进技术研究院主办
[1]徐学军,任 武,袁 喆,等.增强S型波纹管结构耐压强度分析技术[J].火箭推进,2019,45(01):19-24.
XU Xuejun,REN Wu,YUAN Zhe,et al.Compression strength analysis of the reinforced S-shaped bellows[J].Journal of Rocket Propulsion,2019,45(01):19-24.
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XU Xuejun,REN Wu,YUAN Zhe,et al.Compression strength analysis of the reinforced S-shaped bellows[J].Journal of Rocket Propulsion,2019,45(01):19-24.
增强S型波纹管结构耐压强度分析技术
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
45
期数:
2019年01期
页码:
19-24
栏目:
研究与设计
出版日期:
2019-02-28
- Title:
- Compression strength analysis of the reinforced S-shaped bellows
- 文章编号:
- 1672-9374(2019)01-0019-06
- 分类号:
- V475
- 文献标志码:
- A
- 摘要:
- 针对某型液体火箭发动机燃料摇摆装置中的增强S型波纹管,采用理论解析和数值仿真技术进行耐压强度分析研究。研究表明:增强S型波纹管耐压强度数值仿真有限元模型必须采用分层波纹管结构型式,简化成单层波纹管模型仿真计算结果误差较大; 合理选用波纹管有限元模型的网格密度,不仅可有效保证耐压强度计算结果精度,还可减少计算机仿真计算时间; 波纹管的材料、总厚度、波形等参数不变的条件下,适当增加波纹管层数,可提高波纹管的径向刚度,减少波纹管的轴向刚度。
- Abstract:
- For the reinforced S-shaped bellows in the fuel swing device of a liquid rocket engine, the theoretical analysis and numerical simulation are used to study its compression strength.The research shows that the finite element model of the reinforced S-shaped bellows for the pressure resistance analysis must be defined as a layered model, becase the simplified single layer model may lead to larger errors.Reasonable selection of the mesh density of the finite element model can not only effectively ensure the accuracy of the compression strength,but also reduce the computing time.Under the condition that the material, total thickness, wave shape and other parameters of the bellows are constant, appropriately increasing the number of bellows layers can increase the radial stiffness and reduce the axial stiffness.
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备注/Memo
收稿日期:2017-12-21
基金项目:国防科技重点实验室基金(6142704040217047)
作者简介:徐学军(1981—),男,硕士,高级工程师,研究领域为液体火箭发动机结构强度设计
更新日期/Last Update:
2019-02-20