Design,construction,and modeling of aircraft door sealing plate based on SMAs  

作　　者：Chen Zhang Renhao Liu Chongcong Tao Chao Zhang Hongli Ji Jinhao Qiu 

机构地区：[1]State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing,Jiangsu,China

出　　处：《International Journal of Smart and Nano Materials》2022年第3期481-503,共23页国际智能和纳米材料杂志（英文）

基　　金：This work was supported by the China Postdoctoral Science Foundation;National Natural Science Foundation of China;Natural Science Foundation of Jiangsu Province;Foundation Strengthening Plan Technology Fund;Priority Academic Program Development of Jiangsu Higher Education Institutions.

摘　　要：In this work,a novel aircraft door sealing structure driven by shape memory alloys(SMAs)is proposed that offers much improved seal-ing capability than traditional sealing plates.The two-way shape memory effect(TWSME)of SMAs is utilized so that the proposed sealing plate can change its shape through heating and cooling of the driving SMA unit.Considering the inhomogeneous temperature and recovery strain field the SMA exhibits while being trained,a modified finite element(FE)model of the sealing structure is established to predict the deflection of the SMA-based sealing plate.Finally,verification experiments are carried out.The experi-mental results show good agreement with the FE predictions,indicating good accuracy of the modified FE model as well as the effectiveness of the proposed sealing structure.

关 键 词：Aircraft door sealing plate shape memory alloy inhomogeneous strain 

分 类 号：V254[一般工业技术—材料科学与工程] TB383[航空宇航科学与技术—航空宇航制造工程]