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Showing 1 to 20 of 34 for “"Dielectric Elastomer"”.
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Instability of Dielectric Elastomer Actuators
Dielectric elastomers (DEs) are an important class of materials, currently employed in the design and realization of electrically-driven, highly deformable actuators and devices, which find application in several fields of technology and engineering, including aerospace, biomedical and mechanical …
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Performance Optimisation of Dielectric Elastomer Generators
A Dielectric Elastomer Generator (DEG) is an electromechanical transducer, basically a highly deformable parallel-plate capacitor, made up of a soft DE membrane coated with two compliant electrodes on its opposite surfaces. This device is able to convert mechanical work, emanating from its …
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Dynamic Modeling of Soft Robotic Dielectric Elastomer Actuator
<p>Dielectric elastomers actuators (DEAs) are among the preferred materials for developing lightweight, high compliance and energy efficient driven mechanisms for soft robots. Simple DEAs consist mostly of a homogeneous elastomeric materials that transduce electrical energy into mechanical …
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Development of dielectric elastomer actuators for MRI devices
Dielectric elastomer (DE) actuators are an emerging class of polymer actuation devices. They exhibit large strains and have high force and energy densities. They can be designed in a variety of geometries and are inexpensive to manufacture. Currently, the use of DE Actuation is limited because …
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Dielectric elastomer actuators for binary robotics and mechatronics
… for binary robotics and mechatronics based on dielectric elastomer (DE) technology. DE actuators are a novel class of polymer actuators that have shown promising low-cost performance. These actuators were not well understood and, as a result, faced major reliability problems. Fundamental …
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Additively Manufactured Dielectric Elastomer Actuators: Development and Performance Enhancement
… structure. Among the utilized materials, dielectric elastomers (DEs) are intrinsically compliant, high energy density polymers with fast and reversible electromechanical response. Additionally, the electrically driven work principle allows DEs to be distributed in a desired fashion and …
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Soft nanocomposites with enhanced electromechanical response for dielectric elastomer actuators
Electromechanical transducers based on elastomer capacitors are presently considered for many soft actuation applications, due to their large reversible deformation in response to electric field induced electrostatic pressure. The high operating voltage of such devices is currently a large …
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Large Deformable Soft Actuators Using Dielectric Elastomer and Origami Inspired Structures
… for the development of artificial muscle, the dielectric elastomer actuator (DEA) is capable of large deformation by applying an electric field. Theoretical formulation for DEA was performed based upon the constitutive hyperelastic models and was validated by using finite element method (FEM) …
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Design and Kinematics of a Dielectric Elastomer Actuated Micro Dragonfly Robot
… An at-scale dragonfly robot is designed around Dielectric Elastomer Actuators that compress and expand 0.5mm. With this knowledge, MATLAB was used to predict the linkage sizes that control the wing stroke movement. Using the values calculated in MATLAB, Solidworks was used to design a soft robot …
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Comparison of DC Motors and Dielectric Elastomer Actuators For Wearable Wrist Exoskeletons
… required transmission are too large and heavy. Dielectric elastomer actuators (DEAs) may provide a solution to the actuation problem. The focus of this thesis was to compare DC motors with DEAs for use in a wearable wrist exoskeleton to assist with stroke rehabilitation. A simple setup of the …
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Dielectric elastomer composites: analytical and numerical non-convex homogenization methods and applications
… results that have recently identified dielectric elastomer composites as potential enablers of new technologies (essentially, as the next generation of soft sensors and actuators), this work puts forth analytical and numerical methods to determine the macroscopic elastic dielectric …
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Electromechanical Characterization of the Static and Dynamic Response of Dielectric Elastomer Membranes
Dielectric elastomers (DEs) are a relatively new electroactive polymer (EAP) transducer technology. They are capable of over 100% strain when actuated, and can be used as sensors to measure large strains. In actuation mode, the DE is subject to an electric field; in sensing mode, the capacitance of …
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Optimisation of silicone-based dielectric elastomer transducers by means of block copolymers – synthesis and compounding
… soft and robust human muscle. In this regard, dielectric elastomers have been studied. Their actuation occurs when Maxwell stress exceeds elastic stress in the presence of an electrical field, resulting in contraction in thickness and planar expansion in the area. As well as an actuator, …
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Dielectric Elastomer Actuators in Electro-Responsive Surfaces Based on Tunable Wrinkling and the Robotic Arm for Powerful and Continuous Movement
Dielectric elastomer actuators (DEAs) have been used for artificial muscles for years. Recently the DEA-based deformable surfaces have demonstrated controllable microscale roughness, ease of operation, fast response, and possibilities for programmable control. DEA muscles used in bioinspired …
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Development of Devices Based on Electrically Actuated Soft Elastomers
Dielectric elastomer (DE) actuators are electromechanical transducers that essentially consist of one layer of an insulating soft elastomer coated on both sides with com- pliant electrodes. When a voltage is applied between the electrodes, an electrostatic pressure deforms the elastomer triggering …
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An artificial skeletal muscle for use in pediatric rehabilitation robotics
… limb, with cost being an important factor. Dielectric elastomer actuators (DEAs) feature great promise in fulfilling these requirements. Nonetheless, so far only a few studies have attempted to explore rehabilitation applications, and at a very preliminary level. ☐ The overall goal of this …
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Entwurf und Regelung von multistabilen dielektrischen Elastomerwandler-Systemen auf Basis hybrider Modellierung
… analysis, synthesis, and control of bistable dielectric elastomer (DE) transducers, a promising class of smart materials. These materials respond to electrical stimuli with a change in shape, enabling their use as actuators, sensors, or generators in a wide range of applications, including …
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Some simple explicit results for the elastic dielectric properties and stability of layered composites
… — aimed at shedding light on the behavior of dielectric elastomer composites — have been recently reported in the literature for the macroscopic electroelastic response and stability of layered composites with ideal elastic dielectric phases. Such results have been restricted to two phases and …
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Bi-directional Flyback Converter Circuit Design for Flapping-wing Microrobots
… Yufeng Chen’s group has designed and used dielectric elastomer actuators(DEAs) in their aerial micro-robots, which have achieved marvelous collision resilience and acrobatic maneuvers. However, powering the DEAs requires a much higher voltage than the piezoelectric bimorphs actuators. This …
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