NDLI: Reduced Model and Application of Inflating Circular Diaphragm Dielectric Elastomer Generators for Wave Energy Harvesting

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Vertechy, Rocco Rosati, Gastone Pietro Papini Fontana, Marco
Copyright Year	2015
Abstract	Dielectric elastomers (DE) are incompressible rubberlike solids whose electrical and structural responses are highly nonlinear and strongly coupled. Thanks to their coupled electromechanical response, intrinsic lightness, easy manufacturability, and low-cost, DEs are perfectly suited for the development of novel solid-state polymeric energy conversion units with capacitive nature and high-voltage operation, which are more resilient, lightweight, integrated, economic, and disposable than traditional generators based on conventional electromagnetic technology. Inflated circular diaphragm dielectric elastomer generators (ICD-DEG) are a special embodiment of polymeric transducer that can be used to convert pneumatic energy into usable electricity. Potential application of ICD-DEG is as power take-off system for wave energy converters (WEC) based on the oscillating water column (OWC) principle. This paper presents a reduced, yet accurate, dynamic model for ICD-DEG that features one kinematic degree of freedom and which accounts for DE visco-elasticity. The model is computationally simple and can be easily integrated into existing wave-to-wire models of OWCs to be used for fast analysis and real-time applications. For demonstration purposes, integration of the considered ICD-DEG model with a lumped-parameter hydrodynamic model of a realistic OWC is also presented along with a simulation case study.
Starting Page	011004
Ending Page	011012
Page Count	9
File Format	PDF
ISSN	10489002
e-ISSN	15288927
Journal	Journal of Vibration and Acoustics
Volume Number	137
Issue Number	1
DOI	10.1115/1.4028508
Language	English
Publisher	The American Society of Mechanical Engineers
Publisher Date	2015-02-01
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cycles Deformation Degrees of freedom Density Diaphragms (Mechanical devices) Diaphragms (Structural) Dynamic models Elasticity Elastomers Electric potential Electrodes Energy conversion Energy harvesting Finite element analysis Generators Kinematics Membranes Model validation Pressure Seas Simulation Simulation results Solids Structural response analysis Transducers Water Wave energy Wave energy converters Waves Wire
Content Type	Text
Resource Type	Article
Subject	Acoustics and Ultrasonics Mechanics of Materials Mechanical Engineering

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