固体火箭技术2017，Vol.40Issue(3)：289-294,6.DOI:10.7673/j.issn.1006⁃2793.2017.03.004
C/C扩张段典型连接结构热应力对比分析及试验研究
Comparative analysis of thermal stress and test research for C/C divergent section with typical connecting structure
摘要
Abstract
Connecting structure is a key factor influencing the thermal stress of C/C divergent section,so the thermal stress of C/C divergent section with thread,barb,pin and taper sleeve four typical connecting structures was calculated in the same boundary conditions,material properties and dimension to get the best connecting structure. The pin connecting structure is recognized as the best one by comparing the temperature field,stress field and engineering application.Then the pin connecting structure was checked under firing by using ?340 mm testing engine.The C/C divergent section structure was integrated after firing test,which validated the design rationality of this structure. The outer wall temperature curves of C/C divergent section were provided by firing test. The results show that temperature regulation and axial temperature variation tendency are almost consistent with theory analysis, and the maximum temperature of 1127 ℃ occurs at the end of firing test.关键词
C/C扩张段/连接结构/热应力/试验研究Key words
C/C divergent section/connecting structure/thermal stress/test research分类
航空航天引用本文复制引用
李耿,王周成,生志斐,赵康,侯晓..C/C扩张段典型连接结构热应力对比分析及试验研究[J].固体火箭技术,2017,40(3):289-294,6.基金项目
国家重点基础研究发展计划项目( No.613184). （ No.613184）
