摘要
通过对使用2.5D编织工艺生产的复合材料发动机支撑结构的高温热传导分析,得到了薄壁回转体构件承受高温作用后的传导特性;通过地面富氧状态下的考核试验,验证了该结构能够满足壁面950℃高温长时间使用要求;有限元分析与考核试验结果一致,验证了有限元计算的正确性和地面试验各项热流补偿参数的合理性,对此类产品在工程应用中的分析与预示具有很强的指导意义。
The 3D braiding composites is widely used in the field of aviation,aerospace and other high technology because of excellent properties. The resistance of 3D braiding composites to high-temperature is an important application. In this paper,the heat conduction characteristics of a revolving thin wall under high-temperature are obtained through the heat conduction analysis of a 2. 5D braiding CFRP engine structure. Then,through the test under the ground state of oxygen enrichment,it is proved that the structure can be used under high-temperature of 950℃for long time. The consistency of finite element analysis and test results verifies the calculation correctness and the rationality of compensation parameters selection in test. The study has a good guiding significance to the application of3 D braiding composites in engineering.
出处
《宇航材料工艺》
CSCD
北大核心
2017年第4期14-18,36,共6页
Aerospace Materials & Technology
基金
国防基础科研项目(A0320131001)
关键词
编织复合材料
2.5D编织结构
热结构
Braiding composites
2.5D braiding structure
Thermal structure
