Abstract:

Fairing separation simulation is an important part of aerospace research and development， and its key lies in the analysis of separation safety. In this paper， we review the previous simulation studies on the safety of throw hood separation and find that the existing analysis methods and simulation methods are based on the generated simulation separation trajectory. With the development of times and needs， the environment of fairing separation and the material structure of fairing itself have changed. On the basis of the original rigid body separation trajectory， the analysis of flexible fairing has become the main research direction of simulation fairing separation. After the summary of the existing research， the author believes that the main difficulties and key technologies of the existing fairing separation simulation focus on the simplification of the coupling model， the dynamic grid and the CSD model. This paper makes a concrete analysis and prospect of these three technologies. Finally， some conclusions and suggestions are given for the development of simulation of throw hood separation.

Key words: throw hood separation, security boundary, fluid-structure coupling, tight coupling, dynamic grid, modal method

摘要：

抛罩分离仿真是航空航天研发过程中的重要一环，其关键在于对分离安全性的分析。回顾以往对抛罩分离安全性的仿真研究，发现现有的分析方法和模拟方法都基于生成的仿真分离轨迹进行。而随着时代和需求的发展，罩体本身的材料结构和抛罩的环境都发生了变化。在原有刚体分离轨迹的基础上，针对柔性整流罩的分析已经成为了仿真整流罩分离的主要研究方向。在对现有研究进行总结后，认为现有抛罩仿真的主要难点和关键技术集中在耦合模型、动网格以及CSD模型的简化上，对这3种技术做出了具体分析与展望。最后对抛罩分离仿真的发展给出了几点结论和建议。

关键词: 抛罩分离, 安全边界, 流固耦合, 紧耦合, 动网格, 模态法