Transducers based on dielectric elastomers (DE) are able to fulﬁll various requirements as generator, sensor and actuator applications. Depending on the application their design implementation diﬀers. An advantageous transducer topology to improve the strain and force are DE stack-transducers which consist of multiple layers of DE ﬁlms coated with a compliant electrode. Their actuation behavior is strongly depended on the total number of layers and the mechanical interface to its environment. Considering diﬀerent application cases customized actuator designs are proposed and the utilized manufacturing process is brieﬂy presented. Within this publication a FE model is used to simulate the deformation under consideration of various mechanical boundaries. After-wards, experimental investigations are conducted to verify the simulation results. Actuator conﬁgurations with diﬀerent mechanical interfaces are analyzed regarding their static actuation behavior. Furthermore, dynamic tests were conducted to show diﬀerences between actuators made from silicone and polyurethane (PUR). In summary, the tests conﬁrm the results of the FE analysis and provide promising results appropriate for various future applications.
Helge Bochmann, Benedikt von Heckel, Thorben Hoffstadt, and Jürgen Maas, "Interface design for DE based stack-actuators considering various application cases," Proc. SPIE 9798, Electroactive Polymer Actuators and Devices (EAPAD) 2016, 97982I (Presented at SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring: March 24, 2016; Published: 15 April 2016); https://doi.org/10.1117/12.2218012.
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