By Scipione Bobbio
This publication is a close remedy of quantity and floor force-densities and mechanical stresses in electrically and/or magnetically polarized our bodies. The classical procedure applies both good to the electrical and/or to the magnetic case.
The factor of computation of strength densities in fabrics continues to be a debatable one, however it is essential in lots of useful functions. those contain the layout of electrical machines and numerous energy equipment, everlasting magnet units, and piezo-electric actuators and sensors. through combining electrodynamic conception, continuum mechanics and classical thermodynamics, vital and trustworthy formulation for strength densities are derived and settled. specifically, the well known controversy among the Helmholtz and the Kelvin formulation for strength densities in linear fluid dielectrics is analyzed intimately within the mild of latest experimental results.
* completely examines the function of mechanical pressure tensor in electrical and magnetic polarized fabrics; its reference to Maxwell's pressure tensor is elucidated; the classical Cauchy's argument required to introduce the mechanic pressure tensor (the Cauchy reduce) is changed in the sort of solution to be appropriate to polarized materials
* The constitutive relationships of polarized fabrics are derived from these protecting for unpolarized materials
* heavily examines the idea that of electrical and magnetic box strength and its reference to the thermodynamic inner strength of matter
* Considers the function of magneto-hydro-statics (MHS) as a contemporary complete idea together with either magnetostatics and hydrostatics; describes a number of experimental MHS units suited for attempt the theory
* Examines magnetic fabrics from either issues of view: Coulombian and Amperian
* presents a number of various expressions for the ensuing strength and second appearing upon an electronically or magnetically polarized fabric physique, and compares the 2
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