摘要
再生冷却推力室内壁的热-机械疲劳失效严重影响重复使用液体火箭发动机的可靠性和使用寿命,疲劳分析在内壁损伤机理研究、寿命预测和结构优化设计中具有重要作用。简要回顾了推力室再生冷却结构热-机械疲劳分析方法的发展历程,重点围绕材料本构关系、热-力响应计算和疲劳寿命模型,对比梳理已有方法,讨论其特点及应用。基于研究进展与工程需求,从全服役周期瞬态载荷环境、材料本构关系、热-机械损伤模型及验证、基体与涂/镀层耦合失效分析和基于有限数据的工程方法等方面给出了进一步研究的方向和建议。
The thermal-mechanical fatigue failure of regeneratively-cooled thrust chamber wall seriously affects the reliability and service life of reusable liquid rocket engines.Fatigue analysis plays an important role in the study of damage mechanism,life time prediction and structural optimization.The development of thermal-mechanical fatigue analyzing method for the regenerative cooling structure of thrust chambers was briefly reviewed.Focusing on constitutive relations of material,calculation of thermal-mechanical response and fatigue life models,developed methods were summarized and compared,their characteristics and applications were discussed.Based on the research progress and engineering requirement,suggestions were given for further research,in terms of the transient load condition of full service period,constitutive relations,thermal-mechanical damage model and verification,matrix-coating-coupled failure analysis and limited-data-based engineering approach.
作者
张凭
李斌
高玉闪
霍世慧
王振
ZHANG Ping;LI Bin;GAO Yushan;HUO Shihui;WANG Zhen(National Key Laboratory of Aerospace Liquid Propulsion,Xi'an Aerospace Propulsion Institute,Xi'an 710100,China;Academy of Aerospace Propulsion Technology,Xi'an 710100,China)
出处
《火箭推进》
CAS
北大核心
2024年第1期12-27,I0002,共17页
Journal of Rocket Propulsion
基金
国家自然科学基金青年基金(52005385)。
关键词
重复使用
液体火箭发动机
再生冷却推力室
热-机械失效
疲劳寿命预测
reusability
liquid rocket engine
regeneratively-cooled thrust chamber
thermal-mechanical failure
fatigue life prediction
