火箭推进2018，Vol.44Issue(1)：27-35,52,10.
结构动力学模型修正技术在液体火箭发动机中的应用
Application of structural dynamic model updating technique in liquid rocket engine
闫松 1李斌 2李锋1
作者信息
- 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
- 折叠
摘要
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 re-sponse calculation and interface load analysis. Model updating techniques need to be used to tune the ini-tial finite element(FE) model due to the complexity of liquid rocket engine. The model updating and in-terface 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 up-dating 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.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Key words
liquid rocket engine/model updating/MC-1 engine/SSME/interface load analysis分类
航空航天引用本文复制引用
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(1):27-35,52,10.
