electromechanical coupling

I would like to share our recent work published in Physical Review Letters.

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.205502

Beyond piezoelectricity: Flexoelectricity in solids

Jiawang Hong

School of Aerospace Engineering, Beijing Institute of Technology

1. Introduction

This paper explores the critical and post-bulging bifurcation of a cylindrical dielectric elastomer (DE) tube undergoing finite deformation under electro-mechanical coupling loading. Explicit expressions for the critical conditions of electro-mechanical bifurcation are derived by using a simplified mathematical method. The post-bifurcation path is comprehensively investigated by specifying the material model as ideal dielectric elastomer.

Discover the NANOMOTION World as an Early Stage Researcher (PhD student) in an EU-wide program on “Nanoelectromechanical Motion in Functional Materials (NANOMOTION)”!

The individual project:

“Finite-element modelling of electromechanically coupled materials”

will be hosted at University of Duisburg-Essen (Germany), www.uni-due.de/mechanika, with secondment to the University College Dublin (Ireland).

Constitutive relations, 2-D vs. 3-D. The starting point for modeling cellular membranes is the constitutive relations in 2-D space. It is important to set up the corresponding equations directly in two dimensions rather than to consider them as an asymptotic limit of three-dimensional relationships, like it is done in the shell theory. The main reason for the direct 2-D relations is that 3-D continuum approaches are not applicable to membranes whose thickness in on the order of magnitude of the dimension of a single molecule.