炭纤维延伸率对壳体性能的影响  

Effect of carbon fiber's elongation on the performance of cases

作　　者：张世杰[1] 王汝敏[1] 廖英强[2,3] 周伟江[2,3] 程勇[2,3] 

机构地区：[1]西北工业大学理学院应用化学系,西安710129 [2]西安航天复合材料研究所,西安710025 [3]高性能碳纤维制造及应用国家地方联合工程研究中心,西安710089

出　　处：《固体火箭技术》2013年第5期683-686,710,共5页Journal of Solid Rocket Technology

基　　金：国防基础科研计划项目(C0320110006)

摘　　要：针对T700、T800、T1000炭纤维壳体纤维强度转化率高低不等的现象,以炭纤维的延伸率为切入点,结合发动机壳体结构特点,分析不同延伸率炭纤维对发动机壳体性能带来的影响,通过试验验证后提出进一步提升壳体性能的改善措施。研究结果表明,延伸率较高的T700、T1000炭纤维壳体性能发挥优良,而延伸率较低的T800炭纤维壳体更易在封头部位产生复杂的应力状态,导致壳体低压封头破坏。通过采用金属接头结构优化与封头补强措施,使延伸率较低的T800炭纤维壳体的纤维强度转化率由65.7%提升至85.6%。According to different conversion ratio of the fiber strength of T700,T800,and T1000 carbon fiber composite cases,with the carbon fiber＇s elongation as breakthrough point,and considering the structure features of the case,the effect of carbon fiber ＇s elongation on the performance of motor cases were analyzed,and improvement measures were put forward to further enhance the performance through experimental verification.The results show that T700 and T1000 carbon fiber cases with higher elongation exhibit excellent performance,and T800 carbon fiber cases with lower elongation are more easily damaged to low pressure in the parts of the dome due to complex stress state.By means of metal joint structure optimization and dome reinforcement method,the conversion ratio of T800 carbon fiber＇s strength increases from 65.7％ to 85.6％.

关 键 词：复合材料壳体 延伸率 应变 补强 纤维强度转化率 

分 类 号：V258[一般工业技术—材料科学与工程]