http://www.imechanica.org/node/3500 Comments for "Electrostriction in elastic dielectrics undergoing large deformation" en http://www.imechanica.org/node/3500 <p> <a href="http://imechanica.org/user/51">Xuanhe Zhao</a> and <a href="http://imechanica.org/user/2">Zhigang Suo</a>&nbsp; We develop a thermodynamic model of electrostriction for elastic dielectrics capable of large deformation. The model reproduces the classical equations of state for dielectrics at small deformation, but shows that some electrostrictive effects negligible at small deformation may become pronounced at large deformation. The model is then specialized to account for recent experiments with an elastomer, where the electric displacement is linear in the electric field when the strain of the elastomer is held fixed, but the permittivity changes appreciably when the strain changes.&nbsp; Our model couples this quasi-linear dielectric behavior with nonlinear elastic behavior.&nbsp; We explore the practical consequence of the model by deriving conditions under which the deformation-dependent permittivity suppresses electromechanical instability.&nbsp;&nbsp; </p> <br class="clear" /> http://www.imechanica.org/node/3500#comments research dielectric elastomer electromechanical coupling electrostriction suo group research Mon, 14 Jul 2008 18:48:43 -0400 Xuanhe Zhao 3500 at http://www.imechanica.org