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Updated: Jan 27, 2026
07:51
Dielectric RheoSANS — Simultaneous Interrogation of Impedance, Rheology and Small Angle Neutron Scattering of Complex Fluids
Published on: April 10, 2017
10.8K
Instabilities of soft dielectrics
11 Department of Civil and Environmental Engineering , Tufts University , Medford, MA 02155 , USA.
Summary
This study analyzes instabilities in dielectric elastomer transducers, comparing analytical approaches for thin plates and tubes. It provides insights into material and geometric instabilities crucial for device design.
Area of Science:
- Continuum Mechanics
- Nonlinear Electroelasticity
- Materials Science
Background:
- Dielectric elastomer transducers are vital for actuators and sensors.
- Material and geometric instabilities are critical for device performance.
- Nonlinear electroelasticity theory governs dielectric elastomer behavior.
Purpose of the Study:
- To detail instabilities in electroelastic transducer geometries.
- To analyze instabilities using nonlinear electroelasticity theory.
- To compare analytical methods for instability prediction.
Main Methods:
- Application of nonlinear electroelasticity theory.
- Analysis of thin electroelastic plates with flexible electrodes.
- Investigation of axi-symmetric bifurcation in thin-walled electroelastic tubes.
- Numerical simulations using Gent and neo-Hookean electroelastic models.
Main Results:
- Identified specific instabilities in plate and tube configurations.
- Compared Hessian approach with incremental bifurcation analysis for plates.
- Presented numerical results for neo-Hookean and Gent models.
Conclusions:
- The study provides a theoretical framework for analyzing instabilities in electroelastic devices.
- Findings are crucial for designing reliable and efficient dielectric elastomer transducers.
- This work contributes to understanding material behavior under electroelastic loading.
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