Sound sources based on dielectric elastomers
Final Report Abstract
In the project "Sound Sources Based on Dielectric Elastomers (DE)", an in-depth examination of the technology of dielectric elastomers with regard to their use in dynamic and acoustic applications was carried out. For this purpose, in particular the method of electromechanical networks was applied to dielectric elastomers by describing corresponding transducer and structural models. This provides a bridge to the development of dynamic and acoustic systems of already established technologies, where this method has long been used due to its clarity and efficiency in development. On the basis this created for predictive system description, it was possible to derive design criteria, formulate system requirements, and design novel transducer concepts. The latter were exemplarily realized and tested in the form of demonstrators of a dielectrical elastomer unimorph diaphragm as headphone driver and in the form of loudspeakers with roll-actuator drive. This was also accompanied by the development of dedicated electronics for power supply. On the basis of the arrangements created, it was possible to demonstrate numerous technological advantages of DE for use in sound sources compared to conventional electrodynamic systems, as well as their practical suitability. In addition to the possible increase in efficiency, the easy availability of raw materials, the absence of magnets, and above all the considerable weight savings and completely new radiation properties achieved are to be emphasized. The work carried out forms an essential basis for the future development of dynamic and acoustic systems based on dielectric elastomers, which can open up new fields of application and contribute significantly to energy savings.
Publications
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Improved Linear Network Models of Air Filled Tubes, Slits and Cavities. Acta Acustica united with Acustica, 105(1), 174-182.
Bakardjiev, Petko; Voigt, Andreas; Marschner, Uwe; Altinsoy, M. Ercan & Richter, Andreas
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Supply circuit for DEA in dynamic applications Konferenzbericht EuroEAP 2019
P. Bakardjiev, E. Altinsoy & A. Richter
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Adaptive Spiegelschichten auf Basis metallisierter Silikongele, 05/2020, TU-Dresden
M. Franke
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Detailanalyse von DE- Rollenaktoren für Lautsprecherantrieb Konferenzbericht DAGA 2020
P. Bakardjiev, M.Franke, U. Marschner, A. Richter & E.M. Altinsoy
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Dielectric Elastomer Actuator Driven Soft Robotic Structures With Bioinspired Skeletal and Muscular Reinforcement. Frontiers in Robotics and AI, 7.
Franke, M.; Ehrenhofer, A.; Lahiri, S.; Henke, E.-F. M.; Wallmersperger, T. & Richter, A.
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Prediction of the Behavior of Dynamically Actuated DE Roll-Actuators Using Equivalent Circuits. ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers.
Bakardjiev, Petko; Marschner, Uwe; Franke, Markus; Richter, Andreas & Altinsoy, Ercan M.
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Surface and mechanical analysis of metallized poly(dimethylsiloxane) gel for varifocal micromirrors. Surface and Interface Analysis, 52(12), 1163-1170.
Franke, Markus; Slowik, Irma; Langer, Enrico; Leo, Karl & Richter, Andreas
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Dielectric elastomer unimorph Membrane as Headphone Driver (DEUM-Driver) Konferenzbericht EuroEAP 2021
P. Bakardjiev, M. Franke, A. Richter, U. Marschner & E. Altinsoy
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Electromechanical Model of Dielectric Elastomer Transducers. ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers.
Bakardjiev, Petko; Marschner, Uwe; Richter, Andreas & Altinsoy, Ercan M.
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Network-Model based Design of Loudspeakers and Headphones based on Dielectric Elastomers. Sachsische Landesbibliothek, Staats- und Universitatsbibliothek Dresden.
Bakardjiev, Petko
