Induction Effects In The Flat System “Circular Solenoid - Sheet Metal”

Abstract

Using an analytical dependences obtained by integrating Maxwell's equations, a theoretical analysis of the relationship between exciting and induced currents in electrical systems with flat circular solenoids placed over thin-walled sheet metals was carried out. It was found that the temporal characteristics of the exciting current do not have a significant effect on the electrodynamic characteristics of the studied inductor system. It was established he effect of the current excited in the sheet metal on the current in the solenoid at small distances between them leads to a significant decrease in the inductance of the system (by more than ~ 4 times). The source current also increases (by more than an order of magnitude), which is necessary to maintain a constant magnitude of the excited magnetic flux and the corresponding indicators of the force effect on the object being processed. Analytical relationships and numerical estimates necessary for the design of effective tools in modern technologies of magnetic-pulse processing of metals were substantiated. As a result, of theoretical analysis, an analytical approach to solving the problem was proposed, in obtaining calculated dependences and numerical estimates of the mutual influence of conductors with exciting and induced currents.