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)o...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.展开更多
In order to study the dynamic response of the unmanned aerial vehicle cabin door opening and closing system under impact load conditions, considering the flexible treatment of mechanical components, and the system’s ...In order to study the dynamic response of the unmanned aerial vehicle cabin door opening and closing system under impact load conditions, considering the flexible treatment of mechanical components, and the system’s motion with different stiffness of energy-absorbing components, a rigid-flexible coupling model of the cabin door actuation system was established in LMS. Virtual. Motion. In Amesim, a control model of the motor was created. Through the Motion-Amesim co-simulation module, the dynamic module of the system was combined with the motor control module to complete the electromechanical coupling simulation and analyze the results. .展开更多
基金This work was supported by the China Postdoctoral Science FoundationNational Natural Science Foundation of China+2 种基金Natural Science Foundation of Jiangsu ProvinceFoundation Strengthening Plan Technology FundPriority Academic Program Development of Jiangsu Higher Education Institutions.
文摘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.
文摘In order to study the dynamic response of the unmanned aerial vehicle cabin door opening and closing system under impact load conditions, considering the flexible treatment of mechanical components, and the system’s motion with different stiffness of energy-absorbing components, a rigid-flexible coupling model of the cabin door actuation system was established in LMS. Virtual. Motion. In Amesim, a control model of the motor was created. Through the Motion-Amesim co-simulation module, the dynamic module of the system was combined with the motor control module to complete the electromechanical coupling simulation and analyze the results. .