拉伸模式对介电弹性体发电机性能影响的研究
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摘要
为探究介电弹性体发电机发电量与其拉伸变形的关系,采用单轴、纯剪切与双轴3种拉伸模式进行介电弹性体发电机发电性能的实验研究。分析了介电弹性体发电机在3种拉伸模式下电压、电容、电极涂覆面积与拉伸率的关系,实验研究了3种拉伸模式下介电弹性体发电机输出电压、实际产生电能、拉力与其变形量的关系及介电弹性体的破裂极限。实验和研究结果表明,双轴拉伸模式下介电弹性体的破裂极限最大,在面积变换率大于4倍时电能出现大幅度提升,可实现介电弹性体的能量密度最大化。
Aiming at investigating the relationship between the electric energy production and the deformation of dielectric elastomer generation,the experimental study on the performance of dielectric elastomer generations(DEGs)under three tensile modes,namely,uniaxial tension,pure shear and biaxial tension were carried out.The effects of voltage,capacitance and area of electrode coating on the stretching rate of DEGs were theoretically analyzed.Furthermore,the rupture limit and the relationship among the output voltage,electrical energy,force and the deformation of DEGs were investigated.The experimental and study results showed that the highest rupture limit occurred in the biaxial mode and electrical energy was greatly increased when the deformed area was four times more than the original one,which can improve the energy density of DEGs.
Aiming at investigating the relationship between the electric energy production and the deformation of dielectric elastomer generation,the experimental study on the performance of dielectric elastomer generations(DEGs)under three tensile modes,namely,uniaxial tension,pure shear and biaxial tension were carried out.The effects of voltage,capacitance and area of electrode coating on the stretching rate of DEGs were theoretically analyzed.Furthermore,the rupture limit and the relationship among the output voltage,electrical energy,force and the deformation of DEGs were investigated.The experimental and study results showed that the highest rupture limit occurred in the biaxial mode and electrical energy was greatly increased when the deformed area was four times more than the original one,which can improve the energy density of DEGs.
引文
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[2]GIRARD A,BIGUE J P L,O BRIEN B M,et al.Soft two-degree-of-freedom dielectric elastomer position sensor exhibiting linear behavior[J].IEEE/ASME Transactions on Mechatronics,2014,20(1):105-114.
[3]曹建波,任钰雪,鄂世举,等.介电弹性体驱动器柔性电极技术发展动态[J].电子元件与材料,2017,36(7):9-16.
[4]黄青云,王化明,朱银龙,等.弯曲型介电型电活性聚合物驱动器的建模研究[J].压电与声光,2016,38(1):19-23.HUANG Qingyun,WANG Huaming,ZHU Yinlong,et al.Study on the modelling of the bending dielectric electroactive polymer actuator[J].Piezoelectrics&Acoustooptics,2016,38(1):19-23.
[5]KORNBLUH R D,PEI Q.Dielectric elastomers:generator mode fundamentals and applications[J].Proceedings of SPIE-The International Society for Optical Engineering,2001,4329:148-156.
[6]KALTSEIS R,KEPLINGER C,KOH S J A,et al.Natural rubber for sustainable high-power electrical energy generation[J].Rsc Advances,2014,4(53):27905-27913.
[7]MAAS J,GRAF C.Dielectric elastomers for hydro power harvesting[J].Smart Materials&Structures,2012,21(6):371-378.
[8]HUANG J,SHIAN S,SUO Z,et al.Maximizing the energy density of dielectric elastomer generators using equi-biaxial loading[J].Advanced Functional Materials,2013,23(40):5056-5061.
[9]WANG Y,CHEN B,BAI Y,et al.Actuating dielectric elastomers in pure shear deformation by elastomeric conductors[J].Applied Physics Letters,2014,104(6):836.
[10]MCKAY T G,O(BRIEN B M,CALIUS E P,et al.Soft generators using dielectric elastomers[J].Applied Physics Letters,2011,98(14):142903.
[11]MCKAY T,O BRIEN B,CALIUS E,et al.Self-priming dielectric elastomer generator design[J].Smart Materials&Structures,2012,19(5):55025.
[12]MORETTI G,FONTAMA M,VERTECHY R.Parallelogram-shaped dielectric elastomer generators:Analytical model and experimental validation[J].Journal of Intelligent Material Systems&Structures,2015,26(6):740-751.
[13]MORETTI G,FONTANA M,VERTECHY R.Modeling and control of lozenge-shaped dielectric elastomer generators[C]//Snowbird,Utah:ASME Conference on Smart Materials,Adaptive Structures and Intelligent Systems,2013:V001T03A039.
[14]RIGHI M,VERTECHY R,FONTANA M.Experimental characterization of a circular diaphragm dielectric elastomer generator[C]//Newport,Rhode Island:ASME Conference on Smart Materials,Adaptive Structures and Intelligent Systems,2014.
[15]WANG Y,ZHOU J X,WU X H,et al.Energy diagrams of dielectric elastomer generators under different types of deformation[J].Chinese Physics Letters,2013,30(6):66103.
[16]鄂世举,朱喜林,曹建波,等.介电弹性体材料机械能-电能转换特性[J].农业机械学报,2010,41(9):194-198.
[17]林桂娟,刘刚,宋德朝.电活性聚合物发电基本原理及应用研究[J].压电与声光,2011,33(5):796-799.LIN Guijuan,LIU Gang,SONG Dechao.Power generation mechanism and application on the dielectric electro active polymer[J].Piezoelectrics&Acoustooptics,2011,33(5):796-799.
[18]李昊,杨静,刘宇航,等.盘式永磁同步发电机的设计及输出特性分析[J].重庆理工大学学报(自然科学),2016(12):75-82.LI Hao,YANG Jing,LIU Yuhang,et al.Design and output characteristic analysis of disc permanent magnet synchronous generator[J].Journal of Chongqing University of Technology(Natural Science),2016(12):75-82.
[19]WISSLER M,MAZZA E.Modeling of a pre-strained circular actuator made of dielectric elastomers[J].Sensors and Actuators A:Physical,2005,120(1):184-192.
[20]SUO Z.Theory of dielectric elastomers[J].Acta Mechanica Sinica,2010,23(6):549-578.