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Network representation of electromagnetic fields and forces using generalized bond graphs

✍ Scribed by G.D. Nijen Twilhaar

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
997 KB
Volume
319
Category
Article
ISSN
0016-0032

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✦ Synopsis

We show that it is possible to describe electromagnetic (E-M) fields with a generalized network representation (generalized bond graphs). E-M fields in moving matter, forces due to E-Mfields (Lorentzforce, etc.) and$eld transformations are included in the network description. The relations of these E-M phenomena with respect to each other are clearly represented by the bond graph. We also show that it is not possible to describe E-M phenomena in moving matter with conventional bond graphs, but that a generalized bond graph concept is required. The description of simple E-M devices with conventional bond graphs is based on rather drastic assumptions, i.e. quasi-static conditions (E-M radiation neglected), homogeneoushelds, isotropic linear material, etc. These assumptions are not made in this paper.

W energy [J] E electric permittivity [CV-' m-l] p magnetic permeability [Wb A-' m-'1 p charge density [C me31 u specific conductivity [A V-' m-'1 4 electric potential [V] @ vector flux [Wb] Sub-and superscripts Vi ith component of the vector 8 qj i, jth component of the tensor E p' time derivative of p Mklm variable ti of volume element k, 1, m

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