Dielectric Elastomer Fluid Pump of High Pressure and Large Volume Via Synergistic Snap-ThroughSource: Journal of Applied Mechanics:;2018:;volume( 085 ):;issue: 010::page 101003DOI: 10.1115/1.4040478Publisher: 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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contributor author | Wang, Yingxi | |
contributor author | Li, Zhe | |
contributor author | Qin, Lei | |
contributor author | Caddy, George | |
contributor author | Yap, Choon Hwai | |
contributor author | Zhu, Jian | |
date accessioned | 2019-02-28T11:04:55Z | |
date available | 2019-02-28T11:04:55Z | |
date copyright | 6/27/2018 12:00:00 AM | |
date issued | 2018 | |
identifier issn | 0021-8936 | |
identifier other | jam_085_10_101003.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4252476 | |
description 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. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Dielectric Elastomer Fluid Pump of High Pressure and Large Volume Via Synergistic Snap-Through | |
type | Journal Paper | |
journal volume | 85 | |
journal issue | 10 | |
journal title | Journal of Applied Mechanics | |
identifier doi | 10.1115/1.4040478 | |
journal fristpage | 101003 | |
journal lastpage | 101003-6 | |
tree | Journal of Applied Mechanics:;2018:;volume( 085 ):;issue: 010 | |
contenttype | Fulltext |