Eulerian formulation of the constitutive relation for an electro-magneto-elastic material class

TL;DR

This paper introduces an Eulerian formulation for the constitutive relations of electro-magneto-elastic materials, simplifying theoretical and computational modeling by referencing the current configuration directly.

Contribution

It presents a novel Eulerian formulation for electro-magneto-elasticity, avoiding the need for pushed forward operations used in traditional Lagrangian approaches.

Findings

Eulerian formulation simplifies modeling of EME materials.

The new formulation can reproduce existing Lagrangian-based relations.

Enhanced computational efficiency in simulating EME materials.

Abstract

A novel class of electro-magneto-elastic (EME) materials comprise electro-active and magneto-active particles in the polymer matrix that change their elastic behavior with an applied electromagnetic field. The material response for such a material class is usually formulated in terms of Lagrangian strain tensor along with Lagrangian electromagnetic field vectors as pushed forward to the current configuration. This letter article presents a novel formulation of an electro-magneto-elasticity in terms of an Eulerian strain tensor and Eulerian electromagnetic field vectors referring to the current configuration. Such an Eulerian formulation is often favorable from both theoretical and computational standpoints, which avoids the pushed forward operation to get the current configuration. Additionally, an exercise to deduce the constitutive relation for an EME material class available in the existing literature from the newly proposed relation is also illustrated.