Pulsed electromagnetic attraction of nonmagnetic sheet metals

Evolution of mechanical properties of boron/manganese 22MnB5 steel under magnetic pulse influences

“…Since two parts with codirectional current flow are located in a variable electromagnetic field, then it is possible to assume the appearance of attracting and repelling forces between them. However, the researches performed in works [9] and [8] demonstrates that the relation between these force is strongly depended on the electromagnetic field frequency. The obtained results show that at the frequency ≤ 2 kHz, the repelling force is much more lower and can be neglected comparing with attractive action.…”

Magnetic-Pulse Car Body Panels Flattening. Theoretical Aspects and Practical Results

“…At the consider low frequency mode, as there have been shown before, the attractive forces integral efficiency tends to zero value [2,10].…”

“…So, the performance of the first group is based on the sheet metal attraction, that is caused by curtain magnetic properties under such condition as low frequency of the action field [8,9]. The effectiveness of the second group tools, that have an author's name «inductor system with an attractive shield (ISAS)», is determined by conductors forced attraction, that have same directional inducted Fouke's currents and is described by Ampere's low.…”

“…This system consists constructively of the field source-inductor that is placed between two sheet metal conductors. One of them -is the auxiliary attractive shield, another one is the sheet metal simple, the current area of which is subjected to the attractive magnetic pulse influence [8][9][10].…”

“…1 Maxwell`s equations were composed, solution of which gives us the inducted currents time form. (Detail calculation sequence can be reviewed in [1,2,[7][8][9][10]). At the low frequency work mode for the action fields, currents can be presented in the next form.…”