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可重复使用复合材料气瓶设计及试验验证
王恺1,2,3, 吴茜3, 汪文博3, 满满3, 许光3
1.中国科学院理化技术研究所, 北京 100190;2.中国科学院大学, 北京 100049;3.北京宇航系统工程研究所, 北京 100076
摘要:
为了适应未来重复使用运载器更高的重复使用性能要求,设计了一种航天用轻质高压可重复使用复合材料气瓶,采用金属内胆/复合材料层结构形式。复合材料采用T700碳纤维复合材料,金属内衬采用铝合金。采用有限元仿真和试验验证的方法对气瓶的强度和重复使用性能进行了分析和验证,其仿真爆破强度为81 MPa,试验爆破强度84 MPa,仿真与试验疲劳失效次数均大于1 200次。结果表明,所设计的重复使用复合材料气瓶满足23 MPa工作压力重复使用300次要求。
关键词:  重复使用  复合材料气瓶  设计  试验
DOI:10.12044/j.issn.1007-2330.2018.06.003
分类号:TB332
基金项目:国家863计划“重复使用增压输送技术”项目(2015AA7021006)
Design and Experimental Verification of Reusable Composite Pressure Vessels
WANG Kai1,2,3, WU Xi3, WANG Wenbo3, MAN Man3, XU Guang3
1.Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190;2.University of Chinese Academy of Sciences, Beijing 100049;3.Beijing Institute of Astronautical Systems Engineering, Beijing 100076
Abstract:
In order to meet the higher requirement of reusable rocket in the future, a light, high-pressure resistance and reusable astronautic composite vessels was designed. The pressure vessel used metal inner liner/composite layer structure form.The composite layer is made of T700 carbon fiber and resin, and the material of liner is aluminum alloy.Based on the finite element simulation and experiment, the strength and fatigue life of the pressure vessels were verified.The blasting strength of the composite pressure vessels, in simulation and experiment, is 81 MPa and 84 MPa respectively. The cyclic fatigue life is over 1 200 times. Under the working pressure of 23 MPa, the pressure vessels could meet requirements for 300 cycles.
Key words:  Reusable  Composite pressure vessels  Design  Experiment