【摘要】：飛機整體油箱結(jié)構(gòu)的密封性對飛機安全性和續(xù)航能力有很大影響,所以密封膠失效分析和失效過程研究就顯得相當重要.為了研究密封膠的失效,根據(jù)密封膠的受力特點,本文設計了典型元件的密封試驗(平板型和T型),通過試驗得到了這兩種結(jié)構(gòu)的失效載荷和最大載荷.同時,利用有限元模擬軟件ABAQUS對試驗進行了模擬計算,使用cohesive模塊實現(xiàn)對密封膠層的模擬.通過觀察膠層失效過程,得到了膠層失效后的破壞路徑,找到了容易發(fā)生泄漏的位置,并給出了失效載荷與最大載荷的關(guān)系.通過對比試驗結(jié)果和模擬計算結(jié)果,驗證了有限元模擬分析的可靠性,并對結(jié)果進行了討論.
[Abstract]:The sealant failure analysis and failure process study are very important because of the great influence of the aircrafts' overall fuel tank structure on the aircraft safety and the capability of the aircraft. In order to study the failure of sealant, according to the mechanical characteristics of sealant, this paper designs the sealing test of typical components (flat type and T type), and obtains the failure load and maximum load of these two structures. At the same time, the finite element simulation software ABAQUS is used to simulate the test, and the cohesive module is used to simulate the sealing layer. By observing the failure process of the rubber layer, the failure path after the failure of the rubber layer is obtained, the location where the leakage is easy to occur is found, and the relationship between the failure load and the maximum load is given. The reliability of the finite element simulation analysis is verified by comparing the experimental results with the simulation results, and the results are discussed.
【作者單位】： 西北工業(yè)大學工程力學系;
【分類號】：O345;;V214.7

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