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 re-sponse and fatigue life models,developed methods were summarized and compared,their characteristics and applications were discussed.Based on the research progress and engineering requirement,sugges-tions were given for further research,in terms of the transient load condition of full service period,consti-tutive relations,thermal-mechanical damage model and verification,matrix-coating-coupled failure analy-sis and limited-data-based engineering approach.
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
Key words
reusability/liquid rocket engine/regeneratively-cooled thrust chamber/thermal-mechanical failure/fatigue life prediction
维普
万方数据