An algorithm for the estimation of unknown parameters of a nonlinear electro-elasticity model is proposed. Distributions of displacements observed with an error are input data of the algorithm. Finite element approximations of the input data and of the model are used. The algorithm implements the idea of the direct minimization of a residual of equations 1, 2, 3, 4]. The paper is illustrated by...

Using Wolff's model of spherical-wave centers, a scalar energy field is derived between rest-energy of a particle and potential energy of a hypothetical space fabric. The simple formula of mc 2 = .5kx 2 that results reveals a different elasticity constant k for each particle, and based on the knowledge of electro-weak unification which requires the constants k for the electron and neutrino to b...

Purpose: This study aimed to analyze the fracture resistance of denture base resins relined with either a conventional rigid resin or a new resilient resin. Materials and Methods: Two types of test plates were fabricated by relining the base resin (Acron) with a conventional rigid resin (Tokuso Rebase, TR) or a newly developed relining resin (Tokuyama Rebase II, RII). The specimens were divided...

A selective electrothermal magnetic annealing technique is introduced that provides programming capabilities for mechanical micro-resonators. In the proposed approach the magnetic properties of resonators can be locally tuned in a post-fabrication batch-compatible process step. A prototype is implemented in a standard microfabrication process, where resonating ferromagnetic elements are suspend...

In this paper a one-dimensional analytical model for the mechanism of rock fracturing in hydrothermal regimes is described. The model is based upon the modern thermo-poro-elasticity theory and its two non-linear heat-like equations. On the boundary aquifer-caprock a buried thermomechanical source is supposed to be built up in terms of subsurface fluid-rock coupling dynamics. With this considera...

Using  principle  of  minimum  total  potential  energy  approach  in conjunction  with  Rayleigh-Ritz  method,  the  electro-thermo- mechanical  axial  buckling  behavior  of  piezoelectric  polymeric cylindrical  shell  reinforced  with  double-walled  boron-nitride nanotube  (DWBNNT)  is  investigated. Coupling  between  electrical and mechanical  fields  are  considered  according  to  ...