编织复合材料在高温热结构中的应用
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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.
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.
引文
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[2]肖丽,华杨桂.三维编织多功能结构复合材料的发展[J].复合材料学报,1994,6(2).21-27.
[3]严实.三维四向编织复合材料的力学性能研究[D].哈尔滨工业大学工学,2007.
[4]Levent Onal Sabit Adanur对二维编织复合材料弹性、热、强度及失效分析模型的评论[J].力学进展,2008,38(4):502-514.
[5]李嘉禄,孙颖,李学明.二步法方型三维编织复合材料力学性能及影响因素[J].复合材料学报,2004,21(1):90-94.
[6]卢子兴,杨振宇,李仲平.三维编织复合材料力学行为研究进展[J].复合材料学报,2004,21(2):1-7.
[7]李嘉禄,杨红娜,寇长河.三维编织复合材料的疲劳性能[J].复合材料学报,2005,22(4):172-176.
[8]杨红娜.三维编织复合材料接骨板的力学性能研究与设计[D].天津工业大学,2002.