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[1]张亮,吴海波,张德禹,等.液体火箭发动机推力室喉部结构热疲劳寿命预估研究[J].火箭推进,2014,40(05):24-28.
　Study on predicting thermal fatigue life for throat structure of LRE thrust chamber.Study on predicting thermal fatigue life for throat structure of LRE thrust chamber[J].Journal of Rocket Propulsion,2014,40(05):24-28.

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液体火箭发动机推力室喉部结构热疲劳寿命预估研究

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 40 期数: 2014年05期页码: 24-28 栏目: 研究与设计出版日期: 2014-10-28

Title:: Study on predicting thermal fatigue life for throat structure of LRE thrust chamber

作者:: 张亮¹ ; 吴海波² ; 张德禹²; 黄道琼²; 李录贤¹*; 1. 西安交通大学航天航空学院/机械结构强度与振动国家重点实验室，陕西西安 710049； 2. 西安航天动力研究所，陕西西安 710100

Author(s):: Study on predicting thermal fatigue life for throat structure of LRE thrust chamber; 1. State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi’an Jiaotong University, Xi’an 710049, China； 2. Xi’an Aerospace Propulsion Institute, Xi’an 710100, China

关键词:: 热疲劳寿命; 循环疲劳; 准静态疲劳; 热-力耦合分析; 数值模拟

分类号:: V434-34

文献标志码:: A

摘要:: 为了准确预估液体火箭发动机推力室喉部结构的热疲劳寿命，采用热-力耦合方法对推力室喉部结构在整个循环加载过程中的变形进行数值模拟。以最危险的温度最高和变形最大处为考察点，在多次循环载荷下，综合运用循环疲劳和准静态疲劳理论，对数值计算结果进行分析，预估了结构的热疲劳寿命。研究表明：单次循环下，喉部结构寿命预估值最小，偏保守和安全，因而推荐工程设计和工程应用最优先参考。

Abstract:: In order to accurately predict thermal fatigue life for the throat structure of LRE thrust chamber, thermal-mechanical coupling numerical analysis is carried out to simulate the process of thermal deformation for the thrust chamber throat structure in the whole circulation. Some points of the maximum temperature and deformation are taken as the investigated objects to analyze the numerical calculation result and predict the thermal fatigue life of the throat structure under the condition of cyclic loading by means of the theory of cyclic fatigue and the quasi-static fatigue life. The results show that the fatigue life predicted by using the circulation with the single cycle is the safest. Therefore, it is recommended for

参考文献/References:

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备注/Memo

收稿日期：2014-05-13；修回日期：2014-08-29 作者简介：张亮（1988—），男，硕士研究生，研究领域为航天器热疲劳、热防护研究 *通信作者。Email: luxianli@mail.xjtu.edu.cn

更新日期/Last Update: 1900-01-01