Abstract The main aim of the present work is to investigate role Maxwell stress tensor in study active materials. Despite importance this modeling mechatronic devices used sophisticated applications, its non–symmetry still generates controversies literature, probably because classical continuum mechanics assumes a symmetric Cauchy stress, although sum and stresses non–symmetric. In framework ge...

This paper investigates damping ratio in micro-beam resonators based on magneto-thermo-elasticity. A unique aspect of the present study is the effect of permanent magnetic field on the stiffness and thermo-elastic damping of the micro resonators. In our modeling the theory of thermo-elasticity with interacting of an externally applied permanent magnetic field is taken into account. Combined the...

We show that, in Minkowski spacetime, any Faraday tensor verifying the Maxwell equations vacuum allows construct a of 4th order with same algebraic symmetries than Riemann tensor, which implies presence third-order and differential properties Lanczos generator, finally this indicates existence important zilch electromagnetic tensor.

A variational principle for the Upper Convected Maxwell model is presented. The stationary value of appropriate functional drag on an immersed object. From principle, a formula derived derivative with respect to Deborah number arbitrarily shaped particle in circular duct under creeping flow conditions. formalism compared conventional reciprocal theorem. Whereas theorem gives as volume integral ...

The problem of maintaining scale and conformal invariance in Maxwell and general N-form gauge theories away from their critical dimension d c = 2(N +1) is analyzed. We first exhibit the underlying group-theoretical clash between locality, gauge, Lorentz and conformal invariance requirements. " Improved "-traceless-stress tensors are then constructed; each violates one of the above criteria. How...

We present calculations on the deformation of twoand three-layer electret systems. The electrical field is coupled with the stress-strain equations by means of the Maxwell stress tensor. In the simulations, two-phase systems are considered, and intrinsic relative dielectric permittivity and Young’s modulus of the phases are altered. The numerically calculated electro-mechanical activity is comp...

This paper is intended to investigate the relation between electrodynamics in anisotropic material media and its analogous formulation in an spacetime, with non-null Riemann curvature tensor. After discussing the electromagnetism via chiral differential forms, we point out the optical activity of a given material medium, closely related to topological spin, and the Faraday rotation, associated ...

This paper presents the detailed, standard treatment of a simple, gauge invariant action for Weyl and Weyl-like Cartan geometries outlined in a previous paper. In addition to the familiar scalar curvature squared and Maxwell terms, the action chosen contains the logarithmic derivative of the scalar curvature combined with the intrinsic four vector (Weyl vector) in a gauge invariant fashion. Thi...

to evaluate the effect of replacing the almond meal on viscoelastic properties of rice cake, stress relaxation test was carried out. stress relaxation test were conducted using a texture analyzer machine. constants of the peleg - normand and the extended maxwell model for variables were calculated. the results showed that with increasing strain rate increased amount of k1, k2 and decay forces, ...

In high magnetic fields a noticeable deformation of superconductors occurs in the critical state because of the magnetic force density f5j3B, where j is the current density and B is the magnetic field. This results in an anomalous irreversible magnetostriction ~‘‘suprastriction’’! and shape distortion of type-II superconductors with strong pinning. Similar as in magnetic fluid dynamics the stre...