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    Investigation of the State Transition and Moving Boundary in a Pneumatic–Hydraulic Coupled Dielectric Elastomer Actuator

    Source: Journal of Applied Mechanics:;2019:;volume( 086 ):;issue: 003::page 31004
    Author:
    Chen, Liyuan
    ,
    Chen, Weijia
    ,
    Xue, Yaoting
    ,
    Zhang, Mingqi
    ,
    Chen, Xiangping
    ,
    Cao, Xunuo
    ,
    Zhang, Zhen
    ,
    Li, Guorui
    ,
    Li, Tiefeng
    DOI: 10.1115/1.4042136
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Compared to robots and devices made of rigid components, soft robots and flexible devices driven by soft active materials possess various advantages including high adaptability under extreme environment and compatibility with a human. Dielectric elastomer (DE) membrane, which is commonly used in building soft actuators, can achieve large actuation by the combined loadings of voltage-induced Maxwell stress and fluidic pressures (pneumatic and hydraulic pressure). This paper proposes a pneumatic–hydraulic coupled electromechanical actuator (PHCEA), which exhibits strong coupling effect of electromechanical actuation (the Maxwell stress on DE membrane), pneumatic and hydraulic pressures. Considering the moving boundary and state transition, a computational model has been developed to investigate the coupling behaviors of the PHCEA. The numerical result by this model is in accordance with the experimental measurements. The combination of experimental data and the theoretical result indicates that the state transition and moving boundary separate the potential region of electrical breakdown and mechanical damage. This model can be utilized as a practical method to characterize the performance and guide the design of soft devices. The experimental setup and computational method of the PHCEA bring new insights into the fabrication and characterization of soft robots, adaptive optics, and flexible bio-medical devices. The PHCEA possesses wide applications in underwater robots, soft muscles, and microfluidics systems. It can serve as the gas bladder of soft swimming robots, the soft actuator of hydraulic–pneumatic coupling systems, and the gas–liquid valve of flexible microfluidics systems.
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      Investigation of the State Transition and Moving Boundary in a Pneumatic–Hydraulic Coupled Dielectric Elastomer Actuator

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4256693
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    contributor authorChen, Liyuan
    contributor authorChen, Weijia
    contributor authorXue, Yaoting
    contributor authorZhang, Mingqi
    contributor authorChen, Xiangping
    contributor authorCao, Xunuo
    contributor authorZhang, Zhen
    contributor authorLi, Guorui
    contributor authorLi, Tiefeng
    date accessioned2019-03-17T11:07:23Z
    date available2019-03-17T11:07:23Z
    date copyright12/24/2018 12:00:00 AM
    date issued2019
    identifier issn0021-8936
    identifier otherjam_086_03_031004.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4256693
    description abstractCompared to robots and devices made of rigid components, soft robots and flexible devices driven by soft active materials possess various advantages including high adaptability under extreme environment and compatibility with a human. Dielectric elastomer (DE) membrane, which is commonly used in building soft actuators, can achieve large actuation by the combined loadings of voltage-induced Maxwell stress and fluidic pressures (pneumatic and hydraulic pressure). This paper proposes a pneumatic–hydraulic coupled electromechanical actuator (PHCEA), which exhibits strong coupling effect of electromechanical actuation (the Maxwell stress on DE membrane), pneumatic and hydraulic pressures. Considering the moving boundary and state transition, a computational model has been developed to investigate the coupling behaviors of the PHCEA. The numerical result by this model is in accordance with the experimental measurements. The combination of experimental data and the theoretical result indicates that the state transition and moving boundary separate the potential region of electrical breakdown and mechanical damage. This model can be utilized as a practical method to characterize the performance and guide the design of soft devices. The experimental setup and computational method of the PHCEA bring new insights into the fabrication and characterization of soft robots, adaptive optics, and flexible bio-medical devices. The PHCEA possesses wide applications in underwater robots, soft muscles, and microfluidics systems. It can serve as the gas bladder of soft swimming robots, the soft actuator of hydraulic–pneumatic coupling systems, and the gas–liquid valve of flexible microfluidics systems.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleInvestigation of the State Transition and Moving Boundary in a Pneumatic–Hydraulic Coupled Dielectric Elastomer Actuator
    typeJournal Paper
    journal volume86
    journal issue3
    journal titleJournal of Applied Mechanics
    identifier doi10.1115/1.4042136
    journal fristpage31004
    journal lastpage031004-12
    treeJournal of Applied Mechanics:;2019:;volume( 086 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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