Electrodynamics of Materials: Forces, Stresses, and Energies in Solids and Fluids (Electromagnetism)

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9780121082604: Electrodynamics of Materials: Forces, Stresses, and Energies in Solids and Fluids (Electromagnetism)

This book is a detailed treatment of volume and surface force-densities and mechanical stresses in electrically and/or magnetically polarized bodies. The classical approach applies equally well to the electric and/or to the magnetic case.
The issue of computation of force densities in materials is still a controversial one, but it is very important in many practical applications. These include the design of electric machines and various power apparatus, permanent magnet devices, and piezo-electric actuators and sensors. By combining electrodynamic theory, continuum mechanics and classical thermodynamics, important and reliable formulas for force densities are derived and settled. In particular, the well-known controversy between the Helmholtz and the Kelvin formulas for force densities in linear fluid dielectrics is analyzed in detail in the light of existing experimental results.
* Thoroughly examines the role of mechanical stress tensor in electric and magnetic polarized materials; its connection with Maxwell's stress tensor is elucidated; the classical Cauchy's argument required to introduce the mechanic stress tensor (the Cauchy cut) is modified in such a way to be applicable to polarized materials
* The constitutive relationships of polarized materials are derived from those holding for unpolarized materials
* Closely examines the concept of electric and magnetic field energy and its connection with the thermodynamic internal energy of matter
* Considers the role of magneto-hydro-statics (MHS) as a modern comprehensive theory including both magnetostatics and hydrostatics; describes several experimental MHS devices suited to test the theory
* Examines magnetic materials from both points of view: Coulombian and Amperian
* Provides several different expressions for the resultant force and moment acting upon an electronically or magnetically polarized material body, and compares the two

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From the Back Cover:

The book is a detailed, comprehensive and clear treatment of volume and surface force densities and mechanical stresses in electrically and/or magnetically polarized bodies. The approach adopted in the boo is a classical one and applies equally well to the electric and/or the magnetic case.

The issue of computation of force densities in materials is still a controversial one. Meanwhile, this issue is very important in many practical applications such as design of electric machines and various power apparatus, permanent magnet devices, piezo-electric actuators and sensors. By combining electrodynamic theory, continuum mechanics and classical thermodynamics, important and reliable formulas for force densities are derived and settled. In particular, the well-known controversy between the Helmholtz and the Kelvin formulas for force densities in linear fluid dielectrics is analyzed in detail in the light of existing experimental results.

About the Author:

Scipione Bobbio has been professor of Principles of Electronic Engineering since 1979. He is a scientific consultant of the major laboritories in the world in the sector of controlled thermonuclear fusion. He is the author of two physics textbooks, one devoted soley to electromagnetism and one to optics; two texts on exercises in electrotechnics; and about seventy scientific papers on applied electromagnetism, published in major international journals.

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Bobbio, Scipione
Editore: Academic Press (1999)
ISBN 10: 0121082601 ISBN 13: 9780121082604
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Murray Media
(North Miami Beach, FL, U.S.A.)
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Descrizione libro Academic Press, 1999. Hardcover. Condizione libro: New. Codice libro della libreria P110121082601

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