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  1. Home
  2. Indian Institute of Technology Madras
  3. Publication14
  4. A Generalized Framework and a Multiplicative Formulation of Electro-Mechanical Coupling
 
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A Generalized Framework and a Multiplicative Formulation of Electro-Mechanical Coupling

Date Issued
2010
Author(s)
Sansour, C
Skatulla, S
Arunachalakasi, A
DOI
10.1007/978-1-4419-5695-8_30
Abstract
Electro-active polymers (EAP) recently attracted much interest because, upon electrical loading, EAP exhibit a large amount of deformation while sustaining large forces. On the other hand, generalized continuum frameworks are relevant to electro-mechanical coupled problems as they naturally incorporate couples or higher order stresses and can describe scale effects. Here, we want to adopt a strain gradient approach based on the generalized continuum framework as formulated in (Sansour in J. Phys. IV, Proc. 8:341-348,1998; Sansour and Skatulla in Geomech. Geoeng. 2:3-15,2007) and extend it to encompass the electro-mechanically coupled behavior of EAP. A new aspect of the electro-mechanical formulation relates to the multiplicative decomposition of the deformation gradient, well known from plasticity, into a purely elastic part and a further part which relates to the electric field. The formulation is elegant, makes for clarity and is numerically efficient. A numerical example of coupled large deformations is presented as well.
Volume
21
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