可重复使用运载器舵轴裂纹扩展寿命分析  

The Analysis of The Rudder Shaft Crack Growth Life Analysis of The Reusable Vehicle

作　　者：蔡巧言[1] 李配缘 黎增山[3] 冯家赫 CAI Qiaoyan;LI Peiyuan;LI Zengshan;FENG Jiahe(China Academy of Launch Vehicle Technology,Beijing 100076,China;Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China;Beihang University,Beijing 100191,China)

机构地区：[1]中国运载火箭技术研究院,北京100076 [2]北京宇航系统工程研究所,北京100076 [3]北京航空航天大学,北京100191

出　　处：《强度与环境》2023年第6期1-8,共8页Structure & Environment Engineering

基　　金：中国运载火箭技术研究院自主研发重点项目资金支持。

摘　　要：针对可重复使用运载器舵轴中应用的30CrMnSiA及0Cr17Ni4Cu4Nb两种典型材料,开展了裂纹扩展速率测试,确定了其裂纹扩展参数;基于扩展有限元方法,建立了30CrMnSiA及0Cr17Ni4Cu4Nb两种材料平板结构的裂纹扩展寿命预测模型,预测结果与试验结果吻合良好。建立了含初始1mm裂纹的重复使用运载器舵轴裂纹扩展模型,确定了其裂纹扩展寿命,分析模型和结果可用于指导该类结构的损伤容限设计。Regarding the two typical materials 30CrMnSiA and 0Cr17Ni4Cu4Nb used in the rudder transmission mechanism of the reusable vehicle,a crack growth rate test was carried out to determine the crack growth parameters.Based on the extended finite element method,a crack growth life prediction model for flat plate structures of 30CrMnSiA and 0Cr17Ni4Cu4Nb materials was established,the prediction results are in good agreement with the test results.A crack growth model for the rudder shaft of a reusable launch vehicle with an initial 1mm crack was established,determined its crack growth life.The analysis model and results can be used to guide the damage tolerance design of this type of structure.

关 键 词：可重复使用运载器 传动机构 损伤容限 扩展有限元法 

分 类 号：V414.1[航空宇航科学与技术—航空宇航推进理论与工程]