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[1]闫 松,李 斌,李 锋.结构动力学模型修正技术在液体火箭发动机中的应用[J].火箭推进,2018,44(01):27-35.
　YAN Song,LI Bin,LI Feng.Application of structural dynamic model updating technique in liquid rocket engine[J].Journal of Rocket Propulsion,2018,44(01):27-35.
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结构动力学模型修正技术在液体火箭发动机中的应用

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 44 期数: 2018年01期 页码: 27-35 栏目: 研究与设计 出版日期: 2018-02-28
Title:
Application of structural dynamic model updating technique in liquid rocket engine
文章编号:
1672-9374(2018)01-0027-10
作者:
闫 松1; 李 斌2; 李 锋1
1.液体火箭发动机技术重点实验室,陕西 西安 710100; 2.航天推进技术研究院,陕西 西安 710100
Author(s):
YAN Song1;  LI Bin2;  LI Feng1
1. Key Laboratory for Science and Technology on Liquid Rocket Engine, Xi'an 710100, China; 2. Academy of Aerospace Propulsion Technology, Xi'an 710100, China
关键词:
液体火箭发动机;  模型修正;  MC-1发动机;  SSME;  界面载荷分析
Keywords:
liquid rocket engine;  model updating;  MC-1 engine;  SSME;  interface load analysis
分类号:
V434-34
文献标志码:
A
摘要:
可重复使用成为未来液体火箭发动机的重要发展趋势,载荷分析是进行疲劳问题分析的前提,而精确的结构动力学模型又是进行响应计算和界面载荷分析的基础。由于液体火箭发动机结构的复杂性,需要采用模型修正技术对初始建立的有限元模型进行修正。主要介绍了MC-1发动机的模型修正及界面载荷研究,SSME发动机模型修正过程、模型修正技术在航空航天其他领域的应用情况。根据是否考虑试验结果的不确定性,将模型修正方法分为确定性模型修正和随机模型修正两大类。主要阐述了经典的基于灵敏度的模型修正方法和对发展方向进行展望。
Abstract:
Reusable engines will be an important development trend of liquid rocket engine(LRE). Load analysis is the prerequisite of fatigue analysis. Accurate structural dynamic model is the basis of response calculation and interface load analysis. Model updating techniques need to be used to tune the initial finite element(FE)model due to the complexity of liquid rocket engine. The model updating and interface load research of MC-1 engine, the updating process of SSME engine model, and the application of model updating technique in other fields of aerospace are introduced in this paper. According to whether consider uncertainly of the test results, the model updating method is divided into deterministic model updating and stochastic model updating. The classical model updating method based on sensitivity is focused here. At last, the research result is summarized and the future development is prospected.

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备注/Memo

收稿日期:2017-07-20; 修回日期:2017-09-05 作者简介: 闫 松(1988—),男,博士研究生,研究领域为液体火箭发动机结构动特性

更新日期/Last Update: 1900-01-01