Abstract
The time-dependent electro-viscoelastic performance of a circular dielectric elastomer (DE) membrane actuator containing an inclusion is investigated in the context of the nonlinear theory for viscoelastic dielectrics. The membrane, a key part of the actuator, is centrally attached to a rigid inclusion of the radius a, and then connected to a fixed rigid ring of the radius b. When subject to a pressure and a voltage, the membrane inflates into an out-of-plane shape and undergoes an inhomogeneous large deformation. The governing equations for the large deformation are derived by means of non-equilibrium thermodynamics, and viscoelasticity of the membrane is characterized by a rheological spring-dashpot model. In the simulation, effects of the pressure, the voltage, and design parameters on the electromechanical viscoelastic behaviors of the membrane are investigated. Evolutions of the considered variables and profiles of the deformed membrane are obtained numerically and illustrated graphically. The results show that electromechanical loadings and design parameters significantly influence the electro-viscoelastic behaviors of the membrane. The design parameters can be tailored to improve the performance of the membrane. The approach may provide guidelines in designing and optimizing such DE devices.
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Pelrine, R., Kornbluh, R., Pei, Q. B., and Joseph, J. High-speed electrically actuated elastomers with strain greater than 100%. Science, 287, 836–839 (2000)
Anderson, I. A., Gisby, T. A., McKay, T., O’Brien, B. M., and Calius, E. Multi-functional dielectric elastomer artificial muscles for soft and smart machines. Journal of Applied Physics, 112, 041101 (2012)
Carpi, F., Chiarelli, P., Mazzoldi, A., and Rossi, D. D. Electromechanical characterization of dielectric elastomer planar actuators: comparative evaluation of different electrode materials and different counterloads. Sensors and Actuators A: Physical, 107, 85–95 (2003)
Zhang, J. S., Tang, L. L., Li, B., Wang, Y. J., and Chen, H. L. Modeling of the dynamic characteristic of viscoelastic dielectric elastomer actuators subject to different conditions of mechanical load. Journal of Applied Physics, 117, 084902 (2015)
Wang, H. M., Cai, S. Q., Carpi, F., and Suo, Z. G. Computational model of hydrostatically coupled dielectric elastomer actuators. Journal of Applied Mechanics, 79, 031008 (2012)
Shankar, R., Ghosh, T. K., and Spontak, R. J. Dielectric elastomers as next-generation polymeric actuators. Soft Matter, 3, 1116–1129 (2007)
Löwe, C., Zhang, X., and Kovacs, G. Dielectric elastomers in actuator technology. Advanced Engineering Materials, 7, 361–367 (2005)
Lu, T. Q., Foo, C. C., Huang, J. S., Zhu, J., and Suo, Z. G. Highly deformable actuators made of dielectric elastomers clamped by rigid rings. Journal of Applied Physics, 115, 184105 (2014)
He, X. Z., Yong, H. D., and Zhou, Y. H. The characteristics and stability of a dielectric elastomer spherical shell with a thick wall. Smart Materials and Structures, 20, 055016 (2011)
He, T. H., Cui, L. L., Chen, C., and Suo, Z. G. Nonlinear deformation analysis of a dielectric elastomer membrane-spring system. Smart Materials and Structures, 19, 085017 (2009)
Gisby, T. A., O’Brien, B. M., and Anderson, I. A. Self-sensing feedback for dielectric elastomer actuators. Applied Physics Letters, 102, 193703 (2013)
Jung, K. M., Kim, K. J., and Choi, H. R. A novel self-sensing of dielectric elastomer actuator. Sensors and Actuators A: Physical, 143, 343–351 (2008)
Kaltseis, R., Keplinger, C., Baumgartner, R., Kaltenbrunner, M., Li, T. F., Machler, P., Schwodiauer, R., Suo, Z. G., and Bauer, S. Method for measuring energy generation and efficiency of dielectric elastomer generators. Applied Physics Letters, 99, 4578–4586 (2011)
Mckay, T., O’Brien, B., Calius, E., and Anderson, I. Self-priming dielectric elastomer generators. Smart Materials and Structures, 19, 055025 (2010)
Choi, H. R., Jung, K., Ryew, S., Nam, J. D., Jeon, J., Koo, J. C., and Tanie, K. Biomimetic soft actuator: design, modeling, control, and applications. IEEE/ASME Transactions on Mechatronics, 10, 581–593 (2005)
Carpi, F., Frediani, G., Turco, S., and De, R. D. Optics: bioinspired tunable lens with muscle-like electroactive elastomers. Advanced Functional Materials, 21, 4152–4158 (2011)
Shian, S., Diebold, R. M., and Clarke, D. R. Tunable lenses using transparent dielectric elastomer actuators. Optics Express, 21, 8669–8676 (2013)
Li, T. F., Qu, S. X., and Yang, W. Energy harvesting of dielectric elastomer generators concerning inhomogeneous fields and viscoelastic deformation. Journal of Applied Physics, 112, 034119 (2012)
Suo, Z. G. Theory of dielectric elastomers. Acta Mechanica Solida Sinica, 23, 549–578 (2010)
Goulbourne, N., Mockenstrum, E., and Frecker, M. A nonlinear model for dielectric elastomer membranes. Journal of Applied Mechanics, 72, 899–907 (2005)
He, T. H., Zhao, X. H., and Suo, Z. G. Dielectric elastomer membranes undergoing inhomogeneous deformation. Journal of Applied Physics, 106, 083522 (2009)
Zhu, J., Cai, S. Q., and Suo, Z. G. Resonant behavior of a membrane of a dielectric elastomer. International Journal of Solids and Structures, 47, 3254–3262 (2010)
Liu, L. W., Liu, Y. J., Li, B., Yang, K., Li, T. F., and Leng, J. S. Thermo-electro-mechanical instability of dielectric elastomers. Smart Materials and Structures, 20, 075004 (2011)
McMeeking, R. M. and Landis, C. M. Electrostatic forces and stored energy for deformable dielectric materials. Journal of Applied Mechanics, 72, 581–590 (2005)
Wissler, M. and Mazza, E. Mechanical behavior of an acrylic elastomer used in dielectric elastomer actuator. Sensors and Actuators A: Physical, 134, 494–504 (2007)
Lochmatter, P., Kovacs, G., and Wissler, M. Characterization of dielectric elastomer actuators based on a visco-hyperelastic film model. Smart Materials and Structures, 16, 477–486 (2007)
Zhao, X. H., Koh, S. J. A., and Suo, Z. G. Nonequilibrium thermodynamics of dielectric elastomers. International Journal of Applied Mechanics, 3, 203–217 (2011)
Foo, C. C., Koh, S. J. A., Keplinger, C., Kaltseis, R., Bauer, S., and Suo, Z. G. Performance of dissipative dielectric elastomer generators. Journal of Applied Physics, 111, 094107 (2012)
Plante, J. and Dubowsky, S. Large-scale failure modes of dielectric elastomer actuators. International Journal of Solids and Structures, 43, 7727–7751 (2006)
Bai, Y., Jiang, Y., Chen, B., Foo, C. C., Zhou, Y., Xiang, F., Zhou, J., Wang, H., and Suo, Z. G. Cyclic performance of viscoelastic dielectric elastomers with solid hydrogel electrodes. Applied Physics Letters, 104, 062902 (2014)
Kollosche, M., Kofod, G., Suo, Z. G., and Zhu, J. Temporal evolution and instability viscoelastic dielectric elastomer. Journal of the Mechanics and Physics of Solids, 76, 47–64 (2015)
Wang, H. M., Lei, M., and Cai, S. Q. Viscoelastic deformation of a dielectric elastomer membrane subject to electromechanical loads. Journal of Applied Physics, 113, 213508 (2013)
Zhang, J., Chen, H., Sheng, J., Liu, L., Wang, Y., and Jia, S. Dynamic performance of dissipative dielectric elastomers under alternating mechanical load. Applied Physics A, 116, 59–67 (2013)
Zhou, J., Jiang, L., and Khayat, R. Viscoelastic effects on frequency tuning of a dielectric elastomer membrane resonator. Journal of Applied Physics, 115, 124106 (2014)
Li, T. F., Keplinger, C., Baumgartner, R., Bauer, S., Yang, W., and Suo, Z. G. Giant voltageinduced deformation in dielectric elastomers near the verge of snap-through instability. Journal of the Mechanics and Physics of Solids, 61, 611–628 (2013)
Acknowledgements
We would like to sincerely thank Huiming WANG, Professor of Zhejiang University, for his great help to the accomplishment of this paper.
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Project supported by the National Natural Science Foundation of China (No. 11372123)
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Wang, Z., He, T. Electro-viscoelastic behaviors of circular dielectric elastomer membrane actuator containing concentric rigid inclusion. Appl. Math. Mech.-Engl. Ed. 39, 547–560 (2018). https://doi.org/10.1007/s10483-018-2318-8
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DOI: https://doi.org/10.1007/s10483-018-2318-8
Key words
- dielectric elastomer (DE) membrane
- soft active material
- actuator
- time-dependent behavior
- electro-viscoelastic performance