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    Dielectric Elastomer Fluid Pump of High Pressure and Large Volume Via Synergistic Snap-Through

    Source: Journal of Applied Mechanics:;2018:;volume( 085 ):;issue: 010::page 101003
    Author:
    Wang, Yingxi
    ,
    Li, Zhe
    ,
    Qin, Lei
    ,
    Caddy, George
    ,
    Yap, Choon Hwai
    ,
    Zhu, Jian
    DOI: 10.1115/1.4040478
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Harnessing reversible snap-through of a dielectric elastomer (DE), which is a mechanism for large deformation provided by an electromechanical instability, for large-volume pumping has proven to be feasible. However, the output volume of snap-through pumping is drastically reduced by adverse pressure gradient, and large-volume pumping under high adverse pressure gradient by a DE pump has not been realized. In this paper, we propose a new mechanism of DE fluid pumping that can address this shortcoming by connecting DE pumps of different membrane stiffnesses serially in a pumping circuit and by harnessing synergistic interactions between neighboring pump units. We build a simple serial DE pump to verify the concept, which consists of two DE membranes. By adjusting the membrane stiffness appropriately, a synergistic effect is observed, where the snap-through of membrane 1 triggers the snap-through of membrane 2, ensuring that a large volume (over 70 ml/cycle) can be achieved over a wide range of large adverse pressure gradients. In comparison, the conventional single DE pump's pumping volume rapidly decreased beyond a low adverse pressure gradient of 0.196 kPa. At the pressure difference of 0.98 kPa, the serial DE pump's pumping volume is 4185.1% larger than that of the conventional DE pump. This pumping mechanism is customizable for various pressure ranges and enables a new approach to design DE-based soft pumping devices such as a DE total artificial heart, which requires large-volume pumping over a wide range of pressure difference.
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      Dielectric Elastomer Fluid Pump of High Pressure and Large Volume Via Synergistic Snap-Through

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    contributor authorWang, Yingxi
    contributor authorLi, Zhe
    contributor authorQin, Lei
    contributor authorCaddy, George
    contributor authorYap, Choon Hwai
    contributor authorZhu, Jian
    date accessioned2019-02-28T11:04:55Z
    date available2019-02-28T11:04:55Z
    date copyright6/27/2018 12:00:00 AM
    date issued2018
    identifier issn0021-8936
    identifier otherjam_085_10_101003.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4252476
    description abstractHarnessing reversible snap-through of a dielectric elastomer (DE), which is a mechanism for large deformation provided by an electromechanical instability, for large-volume pumping has proven to be feasible. However, the output volume of snap-through pumping is drastically reduced by adverse pressure gradient, and large-volume pumping under high adverse pressure gradient by a DE pump has not been realized. In this paper, we propose a new mechanism of DE fluid pumping that can address this shortcoming by connecting DE pumps of different membrane stiffnesses serially in a pumping circuit and by harnessing synergistic interactions between neighboring pump units. We build a simple serial DE pump to verify the concept, which consists of two DE membranes. By adjusting the membrane stiffness appropriately, a synergistic effect is observed, where the snap-through of membrane 1 triggers the snap-through of membrane 2, ensuring that a large volume (over 70 ml/cycle) can be achieved over a wide range of large adverse pressure gradients. In comparison, the conventional single DE pump's pumping volume rapidly decreased beyond a low adverse pressure gradient of 0.196 kPa. At the pressure difference of 0.98 kPa, the serial DE pump's pumping volume is 4185.1% larger than that of the conventional DE pump. This pumping mechanism is customizable for various pressure ranges and enables a new approach to design DE-based soft pumping devices such as a DE total artificial heart, which requires large-volume pumping over a wide range of pressure difference.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleDielectric Elastomer Fluid Pump of High Pressure and Large Volume Via Synergistic Snap-Through
    typeJournal Paper
    journal volume85
    journal issue10
    journal titleJournal of Applied Mechanics
    identifier doi10.1115/1.4040478
    journal fristpage101003
    journal lastpage101003-6
    treeJournal of Applied Mechanics:;2018:;volume( 085 ):;issue: 010
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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