整体油箱口盖的密封改进设计及失效分析
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摘要
整体油箱不但可以充分利用飞机空间结构,还可以减轻飞机总重量。而飞机整体油箱的口盖密封性能对飞机安全性和续航能力有很大影响,为了分析整体油箱口盖的密封失效,同时提高油箱口盖的密封性能,设计了一种新型的油箱口盖密封方式,对其进行极限承载能力试验,通过试验验证新型油箱口盖密封方式的密封性能是否提高。同时,利用有限元软件ABAQUS对试验进行了模拟计算,通过对比试验与有限元分析结果,验证了试验结果的有效性和有限元分析的可靠性,并对其密封失效进行了讨论。
Aircraft integral fuel tanks can not only make full use of the aircraft space structure, but also can reduce the total weight of the aircraft. And the sealing properties of aircraft integral fuel tank cover have great influence on the safety and endurance of aircrafts. In order to analyze the sealing failure of aircraft integral fuel tank cover, and to improve the sealing performance of the tank cover, a new type tank cover sealing was designed, and subjected to a ultimate load carrying capacity test to verify whether the sealing performance of the new type tank cover sealing is improved. Moreover, we used the finite element software ABAQUS to simulate the failure of the sealants. From the comparison between experiments and simulations, the test results are confirmed to be effective and the finite element simulation results are confirmed to be reliable. Finally, the results were discussed.
Aircraft integral fuel tanks can not only make full use of the aircraft space structure, but also can reduce the total weight of the aircraft. And the sealing properties of aircraft integral fuel tank cover have great influence on the safety and endurance of aircrafts. In order to analyze the sealing failure of aircraft integral fuel tank cover, and to improve the sealing performance of the tank cover, a new type tank cover sealing was designed, and subjected to a ultimate load carrying capacity test to verify whether the sealing performance of the new type tank cover sealing is improved. Moreover, we used the finite element software ABAQUS to simulate the failure of the sealants. From the comparison between experiments and simulations, the test results are confirmed to be effective and the finite element simulation results are confirmed to be reliable. Finally, the results were discussed.
引文
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[4]érez-Ràfols F,Larsson R,Almqvist A.Modelling of leakage on metal-to-metal seals[J].Tribology International,2016,94:421-427.
[5]Varas D,Zaera R,López-Puente J.Numerical modelling of partially filled aircraft fuel tanks submitted to Hydrodynamic Ram[J].Aerospace Science and technology,2012,16(1):19-28.
[6]Griffin P S,Ballinger I A,Jaekle Jr D E,et al.Design and manufacture of a lightweight fuel tank assembly[C]//39th AIAA Joint Propulsion Conference,Huntsville,Alabama.doi.2003,10(6).
[7]胡荣霞.无人机金属燃油箱的设计方法研究[J].航空科学技术,2012(3):53-55.
[8]赵宝华.金属整体油箱结构密封性能分析[D].南京:南京航空航天大学硕士学位论文,2012.
[9]Perillo G,Vedvik N P,Echtermeyer A T.Numerical analyses of low velocity impacts on composite.Advanced modelling techniques[C].Proceedings of the Simulia customer conference–2012.2012.
[10]王一飞.复合材料层压板和加筋结构的低速冲击响应与损伤参数关系研究[D].上海:上海交通大学硕士学位论文,2012.
[11]赵彬.典型密封元件的失效分析与失效过程研究[J].力学季刊,2016,V37(4):721-728.
[2]Mallory W R,ISOM L E,ANSPACH W F.Bench scale dynamic evaluation apparatus for integral fuel tank sealants[J].Journal of Aircraft,1980,17(10):748-752.
[3]Liu Wei.Interfacial failure analysis based on cohesive zone model[J].Computer Aided Engineering,2013,22(A02):456-460.
[4]érez-Ràfols F,Larsson R,Almqvist A.Modelling of leakage on metal-to-metal seals[J].Tribology International,2016,94:421-427.
[5]Varas D,Zaera R,López-Puente J.Numerical modelling of partially filled aircraft fuel tanks submitted to Hydrodynamic Ram[J].Aerospace Science and technology,2012,16(1):19-28.
[6]Griffin P S,Ballinger I A,Jaekle Jr D E,et al.Design and manufacture of a lightweight fuel tank assembly[C]//39th AIAA Joint Propulsion Conference,Huntsville,Alabama.doi.2003,10(6).
[7]胡荣霞.无人机金属燃油箱的设计方法研究[J].航空科学技术,2012(3):53-55.
[8]赵宝华.金属整体油箱结构密封性能分析[D].南京:南京航空航天大学硕士学位论文,2012.
[9]Perillo G,Vedvik N P,Echtermeyer A T.Numerical analyses of low velocity impacts on composite.Advanced modelling techniques[C].Proceedings of the Simulia customer conference–2012.2012.
[10]王一飞.复合材料层压板和加筋结构的低速冲击响应与损伤参数关系研究[D].上海:上海交通大学硕士学位论文,2012.
[11]赵彬.典型密封元件的失效分析与失效过程研究[J].力学季刊,2016,V37(4):721-728.